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