nl_tokens: A method assignment helper for hierarchy subclasses .
pl_tokens: function d3_layout_hierarchyRebind ( object , hierarchy ) { object . sort = d3 . rebind ( object , hierarchy . sort ) ; object . children = d3 . rebind ( object , hierarchy . children ) ; object . <mask> = d3_layout_hierarchyLinks ; object . value = d3 . rebind ( object , hierarchy . value ) ; // If the new API is used, enabling inlining. object . nodes = function ( d ) { d3_layout_hierarchyInline = true ; return ( object . nodes = object ) ( d ) ; } ; return object ; }