You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: miq_pglogical.rb
    path of file: ./repos/manageiq/lib
    
    the code of the file until where you have to start completion: require 'pg'
require 'pg/logical_replication'

class MiqPglogical
  include Vmdb::Logging
  include ConnectionHandling

  PUBLICATION_NAME = 'miq'.freeze
  ALWAYS_EXCLUDED_TABLES = %w[ar_internal_metadata schema_migrations repl_events repl_monitor repl_nodes].freeze

  # :nodoc:
  #
  # Note:  Don't use a delegate with this method, since we want the
  # .with_connection_error_handling to wrap this methods
  def subscriber?
    # From: https://www.postgresql.org/doc
    
  def subscriber?
    # From: https://www.postgresql.org/docs/10/catalog-pg-subscription.html
    # "Unlike most system catalogs, pg_subscription is shared across all databases of a cluster:
    # There is only one copy of pg_subscription per cluster, not one per database."
    #
    # pglogical.subscriber? defaults to seeing ALL subscriptions in the cluster:
    #
    #   This is confusing if the publisher and subscriber db are in the same cluster such as in dev:
    #     On publisher:  pglogical.subscriber? => true (unexpected)
    #     On subscriber: pglogical.subscriber? => true (expected)
    #
    # Therefore, pass the database_name to ensure only subscrptions created in database_name count for subscriber?
    self.class.with_connection_error_handling { pglogical.subscriber?(self.class.database_name) }
  end