Ifd:IfdRelationshipTypeEnum

Enumeration items: A relationship to collect any concepts type into two types of collections; NEST or BAG When used in addChildren the concept must be of type NEST or BAG while the children can be any of the available concept types. When used in addParents the concept can be any type while the parents must be of type NEST or BAG.
 * COLLECTS

A relationship to assign a collection of type NEST or BAG to any other concept. When used in addChildren the concept can be any type while the parents must be of type NEST or BAG. When used in addParents the concept must be of type NEST or BAG while the children can be any of the available concept types. Composes tells that something is a part of something else. Normally the parts (children) are of the same type as the whole (parent) but this is not enforced by the API. Specializes tells that something is a type of somthing else. Specialization does not enforce inheritance of properties as ofthen the case. Each contributor is free to add properties on subtypes as she like. On concept can only be a specialization of another concept of the same type. A concept can hoever be a specialization of many concepts.
 * ASSIGNS_COLLECTIONS
 * ASSOCIATES
 * COMPOSES
 * GROUPS
 * SPECIALIZES
 * ACTS_UPON
 * SEQUENCES
 * DOCUMENTS
 * ASSIGNS_MEASURES
 * ASSIGNS_PROPERTIES
 * ASSIGNS_UNITS
 * ASSIGNS_VALUES
 * ASSIGNS_PROPERTY_WITH_VALUES
 * UNDEFINED

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