@Override
        public Void documentShape(DocumentShape shape) {
            writer.writeInline(memberPrefix + "Member($1S, $3T::expectObjectNode, builder::$2L)",
                    fieldName,
                    memberName,
                    Node.class);
            return null;
        }
Generates the mapping from a node member to a builder field.
smithy-trait-codegen/src/main/java/software/amazon/smithy/traitcodegen/generators/FromNodeGenerator.java