default boolean isIdentity() {
        return false;
    }
Returns if this TypeMapper is an <em>identity</em> TypeMapper.
<p>
An identity TypeMapper will always map to the
same type database {@code ->} java {@code ->} database and
is guaranteed to just pass elements.

@return if this TypeMapper is an <em>identity</em> TypeMapper
runtime-parent/runtime-typemapper/src/main/java/com/speedment/runtime/typemapper/TypeMapper.java