def METHOD_NAME():
    conn = boto3.client("managedblockchain", region_name="us-east-1")
    # Create network
    response = conn.create_network(
        Name="testnetwork1",
        Framework="HYPERLEDGER_FABRIC",
        FrameworkVersion="1.2",
        FrameworkConfiguration=helpers.default_frameworkconfiguration,
        VotingPolicy=helpers.default_votingpolicy,
        MemberConfiguration=helpers.default_memberconfiguration,
    )
    network_id = response["NetworkId"]
    member_id = response["MemberId"]
    # Create proposal
    proposal_id = conn.create_proposal(
        NetworkId=network_id,
        MemberId=member_id,
        Actions=helpers.default_policy_actions,
        Description="Adding a new member",
    )["ProposalId"]
    # Get proposal details
    response = conn.get_proposal(NetworkId=network_id, ProposalId=proposal_id)
    assert response["Proposal"]["Description"] == "Adding a new member"