src/main/java/lt/martynassateika/idea/codeigniter/config/CiConfigUtil.java [101:119]:
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        Collections.singleton(text), file -> {
          PsiManager psiManager = PsiManager.getInstance(project);
          PsiFile psiFile = psiManager.findFile(file);
          if (psiFile instanceof PhpFile) {
            //noinspection deprecation
            psiFile.accept(new PhpRecursiveElementVisitor() {
              @Override
              public void visitPhpAssignmentExpression(AssignmentExpression assignmentExpression) {
                if (MyPsiUtil.isArrayAccessWithStringIndex(assignmentExpression, text)) {
                  expressions.add(assignmentExpression);
                }
              }
            });
          }
          return true;
        }, GlobalSearchScope
            .getScopeRestrictedByFileTypes(GlobalSearchScope.allScope(project),
                PhpFileType.INSTANCE));
    return expressions;
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src/main/java/lt/martynassateika/idea/codeigniter/language/CiLanguageUtil.java [85:103]:
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        Collections.singleton(text), file -> {
          PsiManager psiManager = PsiManager.getInstance(project);
          PsiFile psiFile = psiManager.findFile(file);
          if (psiFile instanceof PhpFile) {
            //noinspection deprecation
            psiFile.accept(new PhpRecursiveElementVisitor() {
              @Override
              public void visitPhpAssignmentExpression(AssignmentExpression assignmentExpression) {
                if (MyPsiUtil.isArrayAccessWithStringIndex(assignmentExpression, text)) {
                  expressions.add(assignmentExpression);
                }
              }
            });
          }
          return true;
        }, GlobalSearchScope
            .getScopeRestrictedByFileTypes(GlobalSearchScope.allScope(project),
                PhpFileType.INSTANCE));
    return expressions;
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