instance method valid?

# File activemodel/lib/active_model/validations.rb, line 90
    def valid?
      errors.clear

      run_callbacks(:validate)
      
      if responds_to?(:validate)
        ActiveSupport::Deprecations.warn "Base#validate has been deprecated, please use Base.validate :method instead"
        validate
      end

      if new_record?
        run_callbacks(:validate_on_create)

        if responds_to?(:validate_on_create)
          ActiveSupport::Deprecations.warn(
            "Base#validate_on_create has been deprecated, please use Base.validate_on_create :method instead")
          validate_on_create
        end
      else
        run_callbacks(:validate_on_update)

        if responds_to?(:validate_on_update)
          ActiveSupport::Deprecations.warn(
            "Base#validate_on_update has been deprecated, please use Base.validate_on_update :method instead")
          validate_on_update
        end
      end

      errors.empty?
    end