spec

type Attribute interface {
	Kind() Kind
	// Name of the attribute with respect to the current spec Version()
	Name() string
	// Version of the spec that this attribute belongs to
	Version() Version
	// Get the value of this attribute from an event context
	Get(ce.EventContextReader) interface{}
	// Set the value of this attribute on an event context
	Set(ce.EventContextWriter, interface{}) error
	// Delete this attribute from and event context, when possible
	Delete(ce.EventContextWriter) error
}

type Kind uint8

type Version interface {
	// String name of the version, e.g. "1.0"
	String() string
	// Prefix for attribute names.
	Prefix() string
	// Attribute looks up a prefixed attribute name (case insensitive).
	// Returns nil if not found.
	Attribute(name string) Attribute
	// Attributes returns all the context attributes for this version.
	Attributes() []Attribute
	// NewContext returns a new context for this version.
	NewContext() ce.EventContext
	// Convert translates a context to this version.
	Convert(ce.EventContextConverter) ce.EventContext
	// SetAttribute sets named attribute to value.
	//
	// Name is case insensitive.
	// Does nothing if name does not start with prefix.
	SetAttribute(context ce.EventContextWriter, name string, value interface{}) error
	// Attribute looks up the attribute from kind.
	// Returns nil if not found.
	AttributeFromKind(kind Kind) Attribute
}

type Versions struct {
	// contains filtered or unexported fields
}