PsiExpression (PsiMethodCallExpression call) { PsiMethodCallExpression qualifierCall = getQualifierMethodCall(call); if (!COLLECTION_STREAM.test(qualifierCall) || ExpressionUtil.isEffectivelyUnqualified(qualifierCall.getMethodExpression())) { return null; } return skipParenthesizedExprDown(qualifierCall.getMethodExpression().getQualifierExpression()); }