state

type State interface {
	// GetVertex gets a vertex
	GetVertex(ids.ID) (Vertex, error)

	// AddVertex adds a vertex
	AddVertex(Vertex) error

	// VertexIssued checks if vertex issued
	VertexIssued(Vertex) bool

	// IsProcessing checks if processing
	IsProcessing(ids.ID) bool
}

type Vertex interface {
	ID() ids.ID
	ParentIDs() []ids.ID
	Height() uint64
	Bytes() []byte
}