def to_s
      public_vars = instance_variables.reject do |var|
        INSTANCE_VARIABLE_LOG_BLACKLIST.include? var
      end

      public_vars.map! do |var|
        "#{var}=\"#{instance_variable_get(var)}\""
      end

      public_vars = public_vars.join(' ')

      "<##{self.class}:#{object_id.to_s(8)} #{public_vars}>"
    end
def to_s
      public_vars = instance_variables.reject do |var|
        INSTANCE_VARIABLE_LOG_BLACKLIST.include? var
      end

      public_vars.map! do |var|
        "#{var}=\"#{instance_variable_get(var)}\""
      end

      public_vars = public_vars.join(' ')

      "<##{self.class}:#{object_id.to_s(8)} #{public_vars}>"
    end
Like Object.to_s, except excludes BLACKLISTed instance vars