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