# File lib/activeldap/schema2.rb, line 118
    def binary?(attr)
      # Get syntax OID
      syntax = attr('attributeTypes', attr, 'SYNTAX')
      return false if syntax.empty?

      # This seems to indicate binary
      result = attr('ldapSyntaxes', syntax[0], 'X-NOT-HUMAN-READABLE')
      return true if result[0] == "TRUE"

      # Get if binary transfer is required (non-binary types)
      # Usually these have the above tag
      result = attr('ldapSyntaxes', syntax[0], 'X-BINARY-TRANSFER-REQUIRED')
      return true if result[0] == "TRUE"

      return false
    end