Method _initializeSelection

src/material/select/select.ts:1021–1032

()

  }

  private _initializeSelection(): void {
    // Defer setting the value in order to avoid the "Expression
    // has changed after it was checked" errors from Angular.
    Promise.resolve().then(() => {
      if (this.ngControl) {
        this._value = this.ngControl.value;
      }

      this._setSelectionByValue(this._value);
      this.stateChanges.next();
    });
  }

  /**
   * Sets the selected option based on a value. If no option can be