@interface PGGraphMusicEdge : PGGraphPropertylessEdge + (id)filter; - (id)label; - (unsigned short)domain; - (id)initFromMomentNode:(id)a0 toMusicSessionNode:(id)a1; - (id)initWithLabel:(id)a0 sourceNode:(id)a1 targetNode:(id)a2 domain:(unsigned short)a3 properties:(id)a4; @end