public String managerTypeName() {
        return managerTypeName(HasAlias.of(document));
    }
Returns the alias of the current document as a java type but with the 
keyword 'Manager' appended to it.
<p>
Example:
<ul>
     <li>{@code EmployeesSchemaManager}
     <li>{@code UserTableManager}
     <li>{@code FirstnameManager}
</ul>

@return  the document alias as a manager type
@see #document()
generator-parent/generator-translator/src/main/java/com/speedment/generator/translator/TranslatorSupport.java