PsiElement (PsiElement elem, boolean forward, TokenSet set, boolean skipNLs) { while (elem != null && elem.getNode() != null && set.contains(elem.getNode().getElementType()) && (skipNLs || elem.getText().indexOf('\n') == -1)) { if (forward) { elem = elem.getNextSibling(); } else { elem = elem.getPrevSibling(); } } return elem; }