code: public GetIdentityMailFromDomainAttributesRequest withIdentities(String... identities) {
          if (this.identities == null) {
              setIdentities(new com.amazonaws.internal.SdkInternalList<String>(identities.length));
          }
          for (String ele : identities) {
              this.identities.add(ele);
          }
          return this;
      }
docs: <p>
  A list of one or more identities.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setIdentities(java.util.Collection)} or {@link #withIdentities(java.util.Collection)} if you want to
  override the existing values.
  </p>
  
  @param identities
  A list of one or more identities.
  @return Returns a reference to this object so that method calls can be chained together.