new Proposal()
        The essential content of the chaincode invocation request
    
    
    
    
    
    
    
Properties:
| Name | Type | Description | 
|---|---|---|
header | 
            
            Header | The header object contains metadata describing key aspects of the invocation request such as target channel, transaction ID, and submitter identity etc. | 
payload | 
            
            ChaincodeProposalPayload | The payload object contains actual content of the invocation request |