public DialogPlusBuilder setHeader(@NonNull View view, boolean fixed) {
    this.headerView = view;
    this.fixedHeader = fixed;
    return this;
  }
public DialogPlusBuilder setHeader ( @ NonNull View view , boolean fixed ) { this . headerView = view ; this . fixedHeader = fixed ; return this ; }
Set the header view using a view

@param fixed is used to determine whether header should be fixed or not. Fixed if true, scrollable otherwise