public void setProposalId(String proposalId) {
        this.proposalId = proposalId;
    }
<p>
The ID of the proposal.
</p>

@param proposalId
       The ID of the proposal.
aws-java-sdk-directconnect/src/main/java/com/amazonaws/services/directconnect/model/DescribeDirectConnectGatewayAssociationProposalsRequest.java