@Override
    public Builder toBuilder() {
        return builder()
                .dependencyType(dependencyType)
                .packageName(packageName)
                .version(version)
                .properties(getProperties())
                .typedProperties(getTypedProperties());
    }
Gets the version string of the dependency.

@return Returns the version.
smithy-codegen-core/src/main/java/software/amazon/smithy/codegen/core/SymbolDependency.java