Method _setLevelInput

src/cdk/tree/padding.ts:104–110

* This has been extracted to a util because of TS 4 and VE. * View Engine doesn't support property rename inheritance. * TS 4.0 doesn't allow properties to override accessors or vice-versa. * @docs-private

(value: number)

   * @docs-private
   */
  protected _setLevelInput(value: number) {
    // Set to null as the fallback value so that _setPadding can fall back to the node level if the
    // consumer set the directive as `cdkTreeNodePadding=""`. We still want to take this value if
    // they set 0 explicitly.
    this._level = isNaN(value) ? null! : value;
    this._setPadding();
  }

  /**
   * This has been extracted to a util because of TS 4 and VE.