public RelationshipType getRelationshipType() {
		String value = first(RELTYPE);
		return (value == null) ? null : RelationshipType.get(value);
	}
public RelationshipType getRelationshipType ( ) { String value = first ( RELTYPE ) ; return ( value == null ) ? null : RelationshipType . get ( value ) ; }
<p>
Gets the RELTYPE (relationship type) parameter value.
</p>
<p>
This parameter is used by the {@link RelatedTo} property. It defines the
kind of relationship the property is describing (for example, a "child"
relationship).
</p>
@return the relationship type or null if not set
@see <a href="http://tools.ietf.org/html/rfc5545#page-25">RFC 5545
p.25</a>