Undocumented predicates

The following predicates are exported, but not or incorrectly documented.

 completions_for_position(Arg1, Arg2, Arg3)

 suggestions_for_position(Arg1, Arg2, Arg3)

 identifier_for_position(Arg1, Arg2, Arg3)

 definition_for_position(Arg1, Arg2, Arg3)

 index_docs(Arg1, Arg2, Arg3, Arg4)

 get_docs(Arg1, Arg2)

 store_document(Arg1, Arg2, Arg3, Arg4)

 get_document_properties(Arg1, Arg2)

 add_document_property(Arg1, Arg2)

 set_document_property(Arg1, Arg2)

 get_document_property(Arg1, Arg2)

 clear_document_property(Arg1, Arg2)

 clear_document_properties(Arg1)

 get_document_uri(Arg1)

 set_document_uri(Arg1)

 clear_document_uri(Arg1)

 get_document_content(Arg1, Arg2)

 set_document_content(Arg1, Arg2)

 clear_document_content(Arg1)

 with_content(Arg1, Arg2, Arg3)

 add_document_item(Arg1, Arg2, Arg3)

 get_document_item(Arg1, Arg2, Arg3)

 clear_document_item(Arg1, Arg2)

 clear_document_items(Arg1)

 add_document_line(Arg1, Arg2, Arg3)

 get_document_line_position(Arg1, Arg2, Arg3)

 clear_document_line(Arg1, Arg2)

 clear_document_lines(Arg1)

 set_document_line_count(Arg1, Arg2)

 get_document_line_count(Arg1, Arg2)

 clear_document_line_count(Arg1)

 use_language_profile(Arg1)

 provide_language_profile(Arg1)

 register_language_profile(Arg1, Arg2)

 reindex_for_profile(Arg1)

 profile_module(Arg1, Arg2)

 ensure_profile_loaded(Arg1)

 get_document_profile(Arg1, Arg2)

 set_document_profile(Arg1, Arg2)

 profile_index_term(Arg1, Arg2, Arg3, Arg4)

 profile_index_docs(Arg1, Arg2, Arg3, Arg4, Arg5)

 profile_index_signature(Arg1, Arg2, Arg3, Arg4, Arg5)

 profile_index_goal(Arg1, Arg2, Arg3, Arg4, Arg5)

 index_goals(Arg1, Arg2, Arg3, Arg4)

 index_goal(Arg1, Arg2, Arg3, Arg4)

 functor_range(Arg1, Arg2, Arg3)

 functor_range(Arg1, Arg2, Arg3, Arg4)

 term_position_range(Arg1, Arg2, Arg3)

 term_range(Arg1, Arg2, Arg3, Arg4)

 argument_positions(Arg1, Arg2)

 symbol_kind(Arg1, Arg2)

 index_text(Arg1)

 begin_indexing(Arg1)

 start_index_roots(Arg1)

 index_roots(Arg1)

 index_root(Arg1)

 references_for_position(Arg1, Arg2, Arg3)

 index_terms(Arg1)