# Generate the code for the signature with an open curly brace
	#
	# Returns the generated signature without a semicolon and curly brace,
	# e.g `RES f(T0 p0, T1 p1, ..., TN pN)`
	# Step 5
	protected fun signature_to_c(v: VISITOR): String
	do
		assert v.frame != null
		var arguments = v.frame.arguments
		var comment = new FlatBuffer
		var selfvar = v.frame.selfvar
		var c_ret = "void"
		if has_return then
			c_ret = "{return_mtype.ctype}"
		end
		var sig = new FlatBuffer
		sig.append("{c_ret} {c_name}({recv_mtype.ctype} self")
		comment.append("({selfvar}: {selfvar.mtype}")

		for i in [0..arguments.length-1[ do
			# Skip the receiver
			var arg = arguments[i+1]
			comment.append(", {arg.mtype}")
			sig.append(", {arg.mtype.ctype} p{i}")
		end
		sig.append(")")
		comment.append(")")
		if has_return then
			comment.append(": {return_mtype.as(not null)}")
		end
		v.add_decl("/* method {self} for {comment} */")
		v.add_decl("{sig} \{")
		return sig.to_s
	end