We forgot to add an ability to alter the arguments of the call

[xgreenx]

The developer can't alter the default arguments of codegen after #1133.

For example, it is normal to alter transferred_value=)

Also renamed set_call_type -> call_type to be more consistent.

[ascjones]

Can you elaborate a bit? In the doc comments we are setting callee transferred_value and gas_limit directly on initialization via call_type. So where would we use these new CallBuilder methods instead?

[xgreenx]

If call_type is initialized, the user can't alter the values inside. For example, codegen here only initializes the callee field(.call_type(::ink_env::call::Call::new().callee(::ink_lang::ToAccountId::to_account_id(self)))). And if some wants to modify transferred_value he can't do that. And it is a common case when the user wants to do a cross contract call via auto-generated builder and modify some arguments like call_flags or transferred_value.