public Invitation withInvitationId(String invitationId) {
        setInvitationId(invitationId);
        return this;
    }
<p>
The unique identifier for the invitation.
</p>

@param invitationId
       The unique identifier for the invitation.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-managedblockchain/src/main/java/com/amazonaws/services/managedblockchain/model/Invitation.java