boolean (PsiElement parent, PsiElement element) { if (!(parent instanceof GrBinaryExpression)) return false; final IElementType tokenType = ((GrBinaryExpression)parent).getOperationTokenType(); if (!(tokenType == GroovyTokenTypes.mEQUAL || tokenType == GroovyTokenTypes.mNOT_EQUAL)) return false; if (element == ((GrBinaryExpression)parent).getLeftOperand()) { final GrExpression rightOperand = ((GrBinaryExpression)parent).getRightOperand(); return rightOperand != null && GrInspectionUtil.isNull(rightOperand); } else { return GrInspectionUtil.isNull(((GrBinaryExpression)parent).getLeftOperand()); } }