var OpenAPIV3FuzzFuncs []interface{} = []interface{}{
	func(s *string, c randfill.Continue) {

		str := randAlphanumString()
		*s = str
	},
	func(o *OpenAPI, c randfill.Continue) {
		c.FillNoCustom(o)
		o.Version = "3.0.0"
		for i, val := range o.SecurityRequirement {
			if val == nil {
				o.SecurityRequirement[i] = make(map[string][]string)
			}

			for k, v := range val {
				if v == nil {
					val[k] = make([]string, 0)
				}
			}
		}

	},
	func(r *interface{}, c randfill.Continue) {
		switch c.Intn(3) {
		case 0:
			*r = nil
		case 1:
			n := c.String(0) + "x"
			*r = n
		case 2:
			n := c.Float64()
			*r = n
		}
	},
	func(v **spec.Info, c randfill.Continue) {

		*v = &spec.Info{}
		c.FillNoCustom(*v)
		(*v).Title = c.String(0) + "x"
	},
	func(v *Paths, c randfill.Continue) {
		c.Fill(&v.VendorExtensible)
		num := c.Intn(5)
		if num > 0 {
			v.Paths = make(map[string]*Path)
		}
		for i := 0; i < num; i++ {
			val := Path{}
			c.Fill(&val)
			v.Paths["/"+c.String(0)] = &val
		}
	},
	func(v *SecurityScheme, c randfill.Continue) {
		if c.Intn(refChance) == 0 {
			c.Fill(&v.Refable)
			return
		}
		switch c.Intn(4) {
		case 0:
			v.Type = "apiKey"
			v.Name = c.String(0) + "x"
			switch c.Intn(3) {
			case 0:
				v.In = "query"
			case 1:
				v.In = "header"
			case 2:
				v.In = "cookie"
			}
		case 1:
			v.Type = "http"
		case 2:
			v.Type = "oauth2"
			v.Flows = make(map[string]*OAuthFlow)
			flow := OAuthFlow{}
			flow.AuthorizationUrl = c.String(0) + "x"
			v.Flows["implicit"] = &flow
			flow.Scopes = make(map[string]string)
			flow.Scopes["foo"] = "bar"
		case 3:
			v.Type = "openIdConnect"
			v.OpenIdConnectUrl = "https://" + c.String(0)
		}
		v.Scheme = "basic"
	},
	func(v *spec.Ref, c randfill.Continue) {
		switch c.Intn(7) {
		case 0:
			*v = spec.MustCreateRef("#/components/schemas/" + randAlphanumString())
		case 1:
			*v = spec.MustCreateRef("#/components/responses/" + randAlphanumString())
		case 2:
			*v = spec.MustCreateRef("#/components/headers/" + randAlphanumString())
		case 3:
			*v = spec.MustCreateRef("#/components/securitySchemes/" + randAlphanumString())
		case 5:
			*v = spec.MustCreateRef("#/components/parameters/" + randAlphanumString())
		case 6:
			*v = spec.MustCreateRef("#/components/requestBodies/" + randAlphanumString())
		}
	},
	func(v *Parameter, c randfill.Continue) {
		if c.Intn(refChance) == 0 {
			c.Fill(&v.Refable)
			return
		}
		c.Fill(&v.ParameterProps)
		c.Fill(&v.VendorExtensible)

		switch c.Intn(3) {
		case 0:

			v.In = "query"
		case 1:
			v.In = "header"
		case 2:
			v.In = "cookie"
		}
	},
	func(v *RequestBody, c randfill.Continue) {
		if c.Intn(refChance) == 0 {
			c.Fill(&v.Refable)
			return
		}
		c.Fill(&v.RequestBodyProps)
		c.Fill(&v.VendorExtensible)
	},
	func(v *Header, c randfill.Continue) {
		if c.Intn(refChance) == 0 {
			c.Fill(&v.Refable)
			return
		}
		c.Fill(&v.HeaderProps)
		c.Fill(&v.VendorExtensible)
	},
	func(v *ResponsesProps, c randfill.Continue) {
		c.Fill(&v.Default)
		n := c.Intn(5)
		for i := 0; i < n; i++ {
			r2 := Response{}
			c.Fill(&r2)

			code := c.Intn(500) + 100
			v.StatusCodeResponses = make(map[int]*Response)
			v.StatusCodeResponses[code] = &r2
		}
	},
	func(v *Response, c randfill.Continue) {
		if c.Intn(refChance) == 0 {
			c.Fill(&v.Refable)
			return
		}
		c.Fill(&v.ResponseProps)
		c.Fill(&v.VendorExtensible)
	},
	func(v *Operation, c randfill.Continue) {
		c.FillNoCustom(v)

		for i, val := range v.SecurityRequirement {
			if val == nil {
				v.SecurityRequirement[i] = make(map[string][]string)
			}

			for k, v := range val {
				if v == nil {
					val[k] = make([]string, 0)
				}
			}
		}
	},
	func(v *spec.Extensions, c randfill.Continue) {
		numChildren := c.Intn(5)
		for i := 0; i < numChildren; i++ {
			if *v == nil {
				*v = spec.Extensions{}
			}
			(*v)["x-"+c.String(0)] = c.String(0)
		}
	},
	func(v *spec.ExternalDocumentation, c randfill.Continue) {
		c.Fill(&v.Description)
		v.URL = "https://" + randAlphanumString()
	},
	func(v *spec.SchemaURL, c randfill.Continue) {
		*v = spec.SchemaURL("https://" + randAlphanumString())
	},
	func(v *spec.SchemaOrBool, c randfill.Continue) {
		*v = spec.SchemaOrBool{}

		if c.Bool() {
			v.Allows = c.Bool()
		} else {
			v.Schema = &spec.Schema{}
			v.Allows = true
			c.Fill(&v.Schema)
		}
	},
	func(v *spec.SchemaOrArray, c randfill.Continue) {
		*v = spec.SchemaOrArray{}
		if c.Bool() {
			schema := spec.Schema{}
			c.Fill(&schema)
			v.Schema = &schema
		} else {
			v.Schemas = []spec.Schema{}
			numChildren := c.Intn(5)
			for i := 0; i < numChildren; i++ {
				schema := spec.Schema{}
				c.Fill(&schema)
				v.Schemas = append(v.Schemas, schema)
			}

		}

	},
	func(v *spec.SchemaOrStringArray, c randfill.Continue) {
		if c.Bool() {
			*v = spec.SchemaOrStringArray{}
			if c.Bool() {
				c.Fill(&v.Property)
			} else {
				c.Fill(&v.Schema)
			}
		}
	},
	func(v *spec.Schema, c randfill.Continue) {
		if c.Intn(refChance) == 0 {
			c.Fill(&v.Ref)
			return
		}
		if c.Bool() {

			c.Fill(&v.Default)
			c.Fill(&v.Description)
			c.Fill(&v.Example)
			c.Fill(&v.ExternalDocs)

			c.Fill(&v.Format)
			c.Fill(&v.ReadOnly)
			c.Fill(&v.Required)
			c.Fill(&v.Title)
			v.Type = spec.StringOrArray{"file"}

		} else {

			c.Fill(&v.SchemaProps)
			c.Fill(&v.SwaggerSchemaProps)
			c.Fill(&v.VendorExtensible)
			c.Fill(&v.ExtraProps)
		}

	},
}

type Components struct {
	// Schemas holds reusable Schema Objects
	Schemas map[string]*spec.Schema `json:"schemas,omitempty"`
	// SecuritySchemes holds reusable Security Scheme Objects, more at https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.0.md#securitySchemeObject
	SecuritySchemes SecuritySchemes `json:"securitySchemes,omitempty"`
	// Responses holds reusable Responses Objects
	Responses map[string]*Response `json:"responses,omitempty"`
	// Parameters holds reusable Parameters Objects
	Parameters map[string]*Parameter `json:"parameters,omitempty"`
	// Example holds reusable Example objects
	Examples map[string]*Example `json:"examples,omitempty"`
	// RequestBodies holds reusable Request Body objects
	RequestBodies map[string]*RequestBody `json:"requestBodies,omitempty"`
	// Links is a map of operations links that can be followed from the response
	Links map[string]*Link `json:"links,omitempty"`
	// Headers holds a maps of a headers name to its definition
	Headers map[string]*Header `json:"headers,omitempty"`
}

type Encoding struct {
	EncodingProps
	spec.VendorExtensible
}

type EncodingProps struct {
	// Content Type for encoding a specific property
	ContentType string `json:"contentType,omitempty"`
	// A map allowing additional information to be provided as headers
	Headers map[string]*Header `json:"headers,omitempty"`
	// Describes how a specific property value will be serialized depending on its type
	Style string `json:"style,omitempty"`
	// When this is true, property values of type array or object generate separate parameters for each value of the array, or key-value-pair of the map. For other types of properties this property has no effect
	Explode bool `json:"explode,omitempty"`
	// AllowReserved determines whether the parameter value SHOULD allow reserved characters, as defined by RFC3986
	AllowReserved bool `json:"allowReserved,omitempty"`
}

type Example struct {
	spec.Refable
	ExampleProps
	spec.VendorExtensible
}

type ExampleProps struct {
	// Summary holds a short description of the example
	Summary string `json:"summary,omitempty"`
	// Description holds a long description of the example
	Description string `json:"description,omitempty"`
	// Embedded literal example.
	Value interface{} `json:"value,omitempty"`
	// A URL that points to the literal example. This provides the capability to reference examples that cannot easily be included in JSON or YAML documents.
	ExternalValue string `json:"externalValue,omitempty"`
}

type ExternalDocumentation struct {
	ExternalDocumentationProps
	spec.VendorExtensible
}

type ExternalDocumentationProps struct {
	// Description is a short description of the target documentation. CommonMark syntax MAY be used for rich text representation.
	Description string `json:"description,omitempty"`
	// URL is the URL for the target documentation.
	URL string `json:"url"`
}

type Header struct {
	spec.Refable
	HeaderProps
	spec.VendorExtensible
}

type HeaderProps struct {
	// Description holds a brief description of the parameter
	Description string `json:"description,omitempty"`
	// Required determines whether this parameter is mandatory
	Required bool `json:"required,omitempty"`
	// Deprecated declares this operation to be deprecated
	Deprecated bool `json:"deprecated,omitempty"`
	// AllowEmptyValue sets the ability to pass empty-valued parameters
	AllowEmptyValue bool `json:"allowEmptyValue,omitempty"`
	// Style describes how the parameter value will be serialized depending on the type of the parameter value
	Style string `json:"style,omitempty"`
	// Explode when true, parameter values of type array or object generate separate parameters for each value of the array or key-value pair of the map
	Explode bool `json:"explode,omitempty"`
	// AllowReserved determines whether the parameter value SHOULD allow reserved characters, as defined by RFC3986
	AllowReserved bool `json:"allowReserved,omitempty"`
	// Schema holds the schema defining the type used for the parameter
	Schema *spec.Schema `json:"schema,omitempty"`
	// Content holds a map containing the representations for the parameter
	Content map[string]*MediaType `json:"content,omitempty"`
	// Example of the header
	Example interface{} `json:"example,omitempty"`
	// Examples of the header
	Examples map[string]*Example `json:"examples,omitempty"`
}

type Link struct {
	spec.Refable
	LinkProps
	spec.VendorExtensible
}

type LinkProps struct {
	// OperationId is the name of an existing, resolvable OAS operation
	OperationId string `json:"operationId,omitempty"`
	// Parameters is a map representing parameters to pass to an operation as specified with operationId or identified via operationRef
	Parameters map[string]interface{} `json:"parameters,omitempty"`
	// Description holds a description of the link
	Description string `json:"description,omitempty"`
	// RequestBody is a literal value or expresion to use as a request body when calling the target operation
	RequestBody interface{} `json:"requestBody,omitempty"`
	// Server holds a server object used by the target operation
	Server *Server `json:"server,omitempty"`
}

type MediaType struct {
	MediaTypeProps
	spec.VendorExtensible
}

type MediaTypeProps struct {
	// Schema holds the schema defining the type used for the media type
	Schema *spec.Schema `json:"schema,omitempty"`
	// Example of the media type
	Example interface{} `json:"example,omitempty"`
	// Examples of the media type. Each example object should match the media type and specific schema if present
	Examples map[string]*Example `json:"examples,omitempty"`
	// A map between a property name and its encoding information. The key, being the property name, MUST exist in the schema as a property. The encoding object SHALL only apply to requestBody objects when the media type is multipart or application/x-www-form-urlencoded
	Encoding map[string]*Encoding `json:"encoding,omitempty"`
}

type OAuthFlow struct {
	OAuthFlowProps
	spec.VendorExtensible
}

type OAuthFlowProps struct {
	// AuthorizationUrl hold the authorization URL to be used for this flow
	AuthorizationUrl string `json:"authorizationUrl,omitempty"`
	// TokenUrl holds the token URL to be used for this flow
	TokenUrl string `json:"tokenUrl,omitempty"`
	// RefreshUrl holds the URL to be used for obtaining refresh tokens
	RefreshUrl string `json:"refreshUrl,omitempty"`
	// Scopes holds the available scopes for the OAuth2 security scheme
	Scopes map[string]string `json:"scopes,omitempty"`
}

type OpenAPI struct {
	// Version represents the semantic version number of the OpenAPI Specification that this document uses
	Version string `json:"openapi"`
	// Info provides metadata about the API
	Info *spec.Info `json:"info"`
	// Paths holds the available target and operations for the API
	Paths *Paths `json:"paths,omitempty"`
	// Servers is an array of Server objects which provide connectivity information to a target server
	Servers []*Server `json:"servers,omitempty"`
	// Components hold various schemas for the specification
	Components *Components `json:"components,omitempty"`
	// SecurityRequirement holds a declaration of which security mechanisms can be used across the API
	SecurityRequirement []map[string][]string `json:"security,omitempty"`
	// ExternalDocs holds additional external documentation
	ExternalDocs *ExternalDocumentation `json:"externalDocs,omitempty"`
}

type Operation struct {
	OperationProps
	spec.VendorExtensible
}

type OperationProps struct {
	// Tags holds a list of tags for API documentation control
	Tags []string `json:"tags,omitempty"`
	// Summary holds a short summary of what the operation does
	Summary string `json:"summary,omitempty"`
	// Description holds a verbose explanation of the operation behavior
	Description string `json:"description,omitempty"`
	// ExternalDocs holds additional external documentation for this operation
	ExternalDocs *ExternalDocumentation `json:"externalDocs,omitempty"`
	// OperationId holds a unique string used to identify the operation
	OperationId string `json:"operationId,omitempty"`
	// Parameters a list of parameters that are applicable for this operation
	Parameters []*Parameter `json:"parameters,omitempty"`
	// RequestBody holds the request body applicable for this operation
	RequestBody *RequestBody `json:"requestBody,omitempty"`
	// Responses holds the list of possible responses as they are returned from executing this operation
	Responses *Responses `json:"responses,omitempty"`
	// Deprecated declares this operation to be deprecated
	Deprecated bool `json:"deprecated,omitempty"`
	// SecurityRequirement holds a declaration of which security mechanisms can be used for this operation
	SecurityRequirement []map[string][]string `json:"security,omitempty"`
	// Servers contains an alternative server array to service this operation
	Servers []*Server `json:"servers,omitempty"`
}

type Parameter struct {
	spec.Refable
	ParameterProps
	spec.VendorExtensible
}

type ParameterProps struct {
	// Name holds the name of the parameter
	Name string `json:"name,omitempty"`
	// In holds the location of the parameter
	In string `json:"in,omitempty"`
	// Description holds a brief description of the parameter
	Description string `json:"description,omitempty"`
	// Required determines whether this parameter is mandatory
	Required bool `json:"required,omitempty"`
	// Deprecated declares this operation to be deprecated
	Deprecated bool `json:"deprecated,omitempty"`
	// AllowEmptyValue sets the ability to pass empty-valued parameters
	AllowEmptyValue bool `json:"allowEmptyValue,omitempty"`
	// Style describes how the parameter value will be serialized depending on the type of the parameter value
	Style string `json:"style,omitempty"`
	// Explode when true, parameter values of type array or object generate separate parameters for each value of the array or key-value pair of the map
	Explode bool `json:"explode,omitempty"`
	// AllowReserved determines whether the parameter value SHOULD allow reserved characters, as defined by RFC3986
	AllowReserved bool `json:"allowReserved,omitempty"`
	// Schema holds the schema defining the type used for the parameter
	Schema *spec.Schema `json:"schema,omitempty"`
	// Content holds a map containing the representations for the parameter
	Content map[string]*MediaType `json:"content,omitempty"`
	// Example of the parameter's potential value
	Example interface{} `json:"example,omitempty"`
	// Examples of the parameter's potential value. Each example SHOULD contain a value in the correct format as specified in the parameter encoding
	Examples map[string]*Example `json:"examples,omitempty"`
}

type Path struct {
	spec.Refable
	PathProps
	spec.VendorExtensible
}

type PathProps struct {
	// Summary holds a summary for all operations in this path
	Summary string `json:"summary,omitempty"`
	// Description holds a description for all operations in this path
	Description string `json:"description,omitempty"`
	// Get defines GET operation
	Get *Operation `json:"get,omitempty"`
	// Put defines PUT operation
	Put *Operation `json:"put,omitempty"`
	// Post defines POST operation
	Post *Operation `json:"post,omitempty"`
	// Delete defines DELETE operation
	Delete *Operation `json:"delete,omitempty"`
	// Options defines OPTIONS operation
	Options *Operation `json:"options,omitempty"`
	// Head defines HEAD operation
	Head *Operation `json:"head,omitempty"`
	// Patch defines PATCH operation
	Patch *Operation `json:"patch,omitempty"`
	// Trace defines TRACE operation
	Trace *Operation `json:"trace,omitempty"`
	// Servers is an alternative server array to service all operations in this path
	Servers []*Server `json:"servers,omitempty"`
	// Parameters a list of parameters that are applicable for this operation
	Parameters []*Parameter `json:"parameters,omitempty"`
}

type Paths struct {
	Paths map[string]*Path
	spec.VendorExtensible
}

type RequestBody struct {
	spec.Refable
	RequestBodyProps
	spec.VendorExtensible
}

type RequestBodyProps struct {
	// Description holds a brief description of the request body
	Description string `json:"description,omitempty"`
	// Content is the content of the request body. The key is a media type or media type range and the value describes it
	Content map[string]*MediaType `json:"content,omitempty"`
	// Required determines if the request body is required in the request
	Required bool `json:"required,omitempty"`
}

type Response struct {
	spec.Refable
	ResponseProps
	spec.VendorExtensible
}

type ResponseProps struct {
	// Description holds a short description of the response
	Description string `json:"description,omitempty"`
	// Headers holds a maps of a headers name to its definition
	Headers map[string]*Header `json:"headers,omitempty"`
	// Content holds a map containing descriptions of potential response payloads
	Content map[string]*MediaType `json:"content,omitempty"`
	// Links is a map of operations links that can be followed from the response
	Links map[string]*Link `json:"links,omitempty"`
}

type Responses struct {
	ResponsesProps
	spec.VendorExtensible
}

type ResponsesProps struct {
	// Default holds the documentation of responses other than the ones declared for specific HTTP response codes. Use this field to cover undeclared responses
	Default *Response `json:"-"`
	// StatusCodeResponses holds a map of any HTTP status code to the response definition
	StatusCodeResponses map[int]*Response `json:"-"`
}

type SecurityScheme struct {
	spec.Refable
	SecuritySchemeProps
	spec.VendorExtensible
}

type SecuritySchemeProps struct {
	// Type of the security scheme
	Type string `json:"type,omitempty"`
	// Description holds a short description for security scheme
	Description string `json:"description,omitempty"`
	// Name holds the name of the header, query or cookie parameter to be used
	Name string `json:"name,omitempty"`
	// In holds the location of the API key
	In string `json:"in,omitempty"`
	// Scheme holds the name of the HTTP Authorization scheme to be used in the Authorization header
	Scheme string `json:"scheme,omitempty"`
	// BearerFormat holds a hint to the client to identify how the bearer token is formatted
	BearerFormat string `json:"bearerFormat,omitempty"`
	// Flows contains configuration information for the flow types supported.
	Flows map[string]*OAuthFlow `json:"flows,omitempty"`
	// OpenIdConnectUrl holds an url to discover OAuth2 configuration values from
	OpenIdConnectUrl string `json:"openIdConnectUrl,omitempty"`
}

type SecuritySchemes map[string]*SecurityScheme

type Server struct {
	ServerProps
	spec.VendorExtensible
}

type ServerProps struct {
	// Description is a short description of the target documentation. CommonMark syntax MAY be used for rich text representation.
	Description string `json:"description,omitempty"`
	// URL is the URL for the target documentation.
	URL string `json:"url"`
	// Variables contains a map between a variable name and its value. The value is used for substitution in the server's URL templeate
	Variables map[string]*ServerVariable `json:"variables,omitempty"`
}

type ServerVariable struct {
	ServerVariableProps
	spec.VendorExtensible
}

type ServerVariableProps struct {
	// Enum is an enumeration of string values to be used if the substitution options are from a limited set
	Enum []string `json:"enum,omitempty"`
	// Default is the default value to use for substitution, which SHALL be sent if an alternate value is not supplied
	Default string `json:"default"`
	// Description is a description for the server variable
	Description string `json:"description,omitempty"`
}