message: Make matrixdropdowncolumn name property required,
diff: @@ -459,8 +459,12 @@ export class MatrixDropdownRowModelBase
  getAllValues(): any {
  return this.value;
  }
  - getFilteredValues(): any { return this.getAllValues(); }
  - getFilteredProperties(): any { return {}; }
  + getFilteredValues(): any {
  + return this.getAllValues();
  + }
  + getFilteredProperties(): any {
  + return {};
  + }
  public set value(value: any) {
  this.isSettingValue = true;
  this.rowValues = {};
  @@ -1126,7 +1130,7 @@ export class QuestionMatrixDropdownModelBase extends Question
  JsonObject.metaData.addClass(
  "matrixdropdowncolumn",
  [
  - "name",
  + "!name",
  { name: "title", serializationProperty: "locTitle" },
  {
  name: "cellType",
  