public DelegatedAdministrator withJoinedTimestamp(java.util.Date joinedTimestamp) {
        setJoinedTimestamp(joinedTimestamp);
        return this;
    }
<p>
The date when the delegated administrator's account became a part of the organization.
</p>

@param joinedTimestamp
       The date when the delegated administrator's account became a part of the organization.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-organizations/src/main/java/com/amazonaws/services/organizations/model/DelegatedAdministrator.java