public void setImplementation(String implementation) {
        this.implementation = requireNonNull(implementation);
    }
A mapping between a particular database type and a {@link TypeMapper}. This
class is intended to be instantiated by the maven plugin when parsing the
pom.xml-file.

@author Emil Forslund
@since 3.0.0
build-parent/maven-plugin/src/main/java/com/speedment/maven/typemapper/Mapping.java