SPECBASE-42 Define TEMPLATE_ID aligned with HRID

docs/UML/classes/org.openehr.base.base_types.template_id.adoc

@@ -6,9 +6,22 @@ h|*Class*
 2+^h|*TEMPLATE_ID*
 
 h|*Description*
-2+a|Identifier for templates. Lexical form to be determined.
-
+2+a|Identifier for templates. The template ID is strongly recommended to follow the link:https://specifications.openehr.org/releases/AM/development/AOM2.html#_archetype_hrid_class[HRID format]. 
+For backwards compatibility reasons a free text string is still allowed. If the TEMPLATE_ID string matches the requirements for ARCHETYPE_HRID (function is_archetype_hrid is TRUE), it is assumed to be an ARCHETYPE_HRID. Thus it can safely be parsed into the individual attributes of that class, notably including the specifications for semantic versioning. 
 h|*Inherit*
 2+|`<<_object_id_class,OBJECT_ID>>`
+h|*Functions*
+^h|*Signature*
+^h|*Meaning*
 
+h|*1..1*
+|*is_archetype_hrid* (): `link:/releases/BASE/{base_release}/foundation_types.html#_boolean_class[Boolean^]`
+a|True if `_value_` matches the regular expression `^(?<namespace>(?:(?:[a-zA-Z_][a-zA-Z0-9_-])(?:.[a-zA-Z_][a-zA-Z0-9_-])+]*)+)::)
+(?<rm_publisher>[a-zA-Z][a-zA-Z0-9_]+)-
+(?<rm_package>[a-zA-Z][a-zA-Z0-9_]+)-
+(?<rm_class>[a-zA-Z][a-zA-Z0-9_]+)\.
+(?<concept_name>[a-zA-Z][a-zA-Z0-9_-]+)\.
+(?<release_version>v\d+(?:\.\d+){0,2})
+(?:-(?<version_status>[a-zA-Z0-9]+))?
+(?:\.(?<build_count>\d+))?$`
 |===