class ActiveModel::LazyAttributeSet

def fetch_value(name, &block)

Experimental RBS support (using type sampling data from the type_fusion project). 

type ActiveModel__LazyAttributeSet_fetch_value_return_value = String | Integer | nil | Date | true

def fetch_value: (String name, ) -> ActiveModel__LazyAttributeSet_fetch_value_return_value

This signature was generated using 325 samples from 2 applications. 

def fetch_value(name, &block)
  if attr = @attributes[name]
    return attr.value(&block)
  end
  @casted_values.fetch(name) do
    value_present = true
    value = values.fetch(name) { value_present = false }
    if value_present
      type = additional_types.fetch(name, types[name])
      @casted_values[name] = type.deserialize(value)
    else
      attr = default_attribute(name, value_present, value)
      attr.value(&block)
    end
  end
end