question: protected void initSiblingNames ( ) { if ( siblingNameIndex == - 1 ) { List < Node > siblings = parentNode . childNodes ; int index = 0 ; for ( int i = 0 , siblingsSize = siblings . size ( ) ; i < siblingsSize ; i ++ ) { Node sibling = siblings . get ( i ) ; if ( sibling . siblingNameIndex == - 1 && nodeType == NodeType . ELEMENT && nodeName . equals ( sibling . getNodeName ( ) ) ) { sibling . siblingNameIndex = index ++ ; } } } }
target:  Initializes siblings elements of the same name.