The abstraction used by the Field to read and write object properties.
Returns the value that corresponds to key.
An arbitrary object from which the value must be read. May be undefined or null.
undefined
null
The key to read.
The value that corresponds to the key.
Returns the object updated where the key is associated with the new value.
The object to update. May be undefined or null.
The key to write.
The value to associate with the key.
The updated object.
The abstraction used by the Field to read and write object properties.