public static PsiExpression getParentElement(PsiLiteralExpression context) {
    PsiMethodCallExpression methodCallExpression = PsiTreeUtil.getParentOfType(context, PsiMethodCallExpression.class);
    final Object value = context.getValue();
    if (value instanceof String && ((String)value).endsWith(".bss")) {
      final PsiExpressionList addArgumentsList = PsiTreeUtil.getParentOfType(methodCallExpression, PsiExpressionList.class);
      methodCallExpression = PsiTreeUtil.getParentOfType(addArgumentsList, PsiMethodCallExpression.class);
    }
    if (methodCallExpression != null) {
      PsiMethod psiMethod = methodCallExpression.resolveMethod();
      if (psiMethod != null) {
        if ("getResource".equals(psiMethod.getName())) {
          final PsiExpressionList addArgumentsList = PsiTreeUtil.getParentOfType(methodCallExpression, PsiExpressionList.class);
          methodCallExpression = PsiTreeUtil.getParentOfType(addArgumentsList, PsiMethodCallExpression.class);
          psiMethod = methodCallExpression != null ? methodCallExpression.resolveMethod() : null;
          if (psiMethod == null) return null;
        }
        if ("add".equals(psiMethod.getName())) {
          final PsiClass containingClass = psiMethod.getContainingClass();
          if (containingClass != null ) {
            final PsiExpression qualifierExpression = methodCallExpression.getMethodExpression().getQualifierExpression();
            if (qualifierExpression instanceof PsiMethodCallExpression) {
              final PsiReferenceExpression getStylesheetsMethodExpression = ((PsiMethodCallExpression)qualifierExpression).getMethodExpression();
              if ("getStylesheets".equals(getStylesheetsMethodExpression.getReferenceName())) {
                return getStylesheetsMethodExpression.getQualifierExpression();
              }
            }
          }
        }
      }
    }
    return null;
  }
public static PsiExpression getParentElement(PsiLiteralExpression context)