Expanded class hierarchy of views_handler_filter_many_to_one

class \views_object
- class \views_handler
  - class \views_handler_area
  - class \views_handler_argument
  - class \views_handler_field
  - class \views_handler_filter
    class \tripal_views_handler_filter_file_upload
    class \tripal_views_handler_filter_no_results
    class \tripal_views_handler_filter_sequence
    class \tripal_views_handler_filter_textarea
    class \views_handler_filter_boolean_operator
    class \views_handler_filter_broken
    class \views_handler_filter_equality
    class \views_handler_filter_fields_compare
    class \views_handler_filter_history_user_timestamp
    class \views_handler_filter_in_operator
    class \views_handler_filter_aggregator_category_cid
    class \views_handler_filter_entity_bundle
    class \views_handler_filter_file_status
    class \views_handler_filter_locale_group
    class \views_handler_filter_locale_language
    class \views_handler_filter_locale_version
    class \views_handler_filter_many_to_one
    class \views_handler_filter_field_list
    class \views_handler_filter_term_node_tid
    class \views_handler_filter_user_permissions
    class \views_handler_filter_user_roles
    class \views_handler_filter_node_comment
    class \views_handler_filter_node_language
    class \views_handler_filter_node_type
    class \views_handler_filter_profile_selection
    class \views_handler_filter_system_type
    class \views_handler_filter_user_name
    class \views_handler_filter_vocabulary_machine_name
    class \views_handler_filter_vocabulary_vid
    class \views_handler_filter_node_access
    class \views_handler_filter_node_status
    class \views_handler_filter_node_tnid
    class \views_handler_filter_node_tnid_child
    class \views_handler_filter_numeric
    class \views_handler_filter_search
    class \views_handler_filter_string
  - class \views_handler_relationship
  - class \views_handler_sort
- class \views_plugin