int (@NotNull ASTNode child) { LOG.assertTrue(child.getTreeParent() == this); IElementType i = child.getElementType(); if (i == JAVA_CODE_REFERENCE) { return ChildRole.QUALIFIER; } else if (i == DOT) { return ChildRole.DOT; } else if (i == THIS_KEYWORD) { return ChildRole.THIS_KEYWORD; } else { return ChildRoleBase.NONE; } }