src/app/components/apps-view/apps-view.component.html [95:111]:
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          <mat-cell *matCellDef="let element">{{ element[columnDef.colId] || 'n/a' }}</mat-cell>
        </ng-template>
      </ng-container>

      <ng-container matColumnDef="indicatorIcon">
        <mat-header-cell *matHeaderCellDef class="indicator-icon"></mat-header-cell>
        <mat-cell *matCellDef="let element" class="indicator-icon">
          <span>
            <i class="fas fa-plus-circle" *ngIf="!element.isSelected"></i>
            <i class="fas fa-minus-circle" *ngIf="element.isSelected"></i>
          </span>
        </mat-cell>
      </ng-container>

      <ng-container matColumnDef="noRecord">
        <mat-footer-cell *matFooterCellDef>
          <div class="no-record">No records found</div>
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src/app/components/nodes-view/nodes-view.component.html [55:71]:
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          <mat-cell *matCellDef="let element">{{ element[columnDef.colId] || 'n/a' }}</mat-cell>
        </ng-template>
      </ng-container>

      <ng-container matColumnDef="indicatorIcon">
        <mat-header-cell *matHeaderCellDef class="indicator-icon"></mat-header-cell>
        <mat-cell *matCellDef="let element" class="indicator-icon">
          <span>
            <i class="fas fa-plus-circle" *ngIf="!element.isSelected"></i>
            <i class="fas fa-minus-circle" *ngIf="element.isSelected"></i>
          </span>
        </mat-cell>
      </ng-container>

      <ng-container matColumnDef="noRecord">
        <mat-footer-cell *matFooterCellDef>
          <div class="no-record">No records found</div>
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