code: public Stack withStackErrors(StackError... stackErrors) {
          if (this.stackErrors == null) {
              setStackErrors(new java.util.ArrayList<StackError>(stackErrors.length));
          }
          for (StackError ele : stackErrors) {
              this.stackErrors.add(ele);
          }
          return this;
      }
docs: <p>
  The errors for the stack.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setStackErrors(java.util.Collection)} or {@link #withStackErrors(java.util.Collection)} if you want to
  override the existing values.
  </p>
  
  @param stackErrors
  The errors for the stack.
  @return Returns a reference to this object so that method calls can be chained together.