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: json_column.rb
    path of file: ./repos/thinking-sphinx/spec/support
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

class JSONColumn
  include ActiveRecord::ConnectionAdapters

  def self.call
    new.call
  end

  def call
    ruby? && postgresql? && column?
  end

  private

  def column?
    (
      ActiveRecord::Connec
    
  def column?
    (
      ActiveRecord::ConnectionAdapters.constants.include?(:PostgreSQLAdapter) &&
      PostgreSQLAdapter.constants.include?(:TableDefinition) &&
      PostgreSQLAdapter::TableDefinition.instance_methods.include?(:json)
    ) || (
      ActiveRecord::ConnectionAdapters.constants.include?(:PostgreSQL) &&
      PostgreSQL.constants.include?(:ColumnMethods) &&
      PostgreSQL::ColumnMethods.instance_methods.include?(:json)
    )
  end