code: @ManyToOne(targetEntity = DocumentProposalContainer.class, cascade = {
          CascadeType.ALL
      })
      @JoinColumn(name = "DOCUMENT_PROPOSAL_DOCUMENT_S_0")
      public DocumentProposalContainer getDocumentProposal() {
          return documentProposal;
      }
docs: Gets the document proposal.
  
  @return the document proposal