@Override
    public Builder toBuilder() {
        Builder builder = new Builder();
        return builder.namespace(namespace, namespaceDelimiter)
                .name(name)
                .properties(getProperties())
                .typedProperties(getTypedProperties())
                .definitionFile(definitionFile)
                .declarationFile(declarationFile)
                .references(references)
                .dependencies(dependencies);
    }
Gets the list of symbols that are referenced by this symbol.

@return Returns the Symbol references.
smithy-codegen-core/src/main/java/software/amazon/smithy/codegen/core/Symbol.java