* function `getProperty(name: Name, inherit: Boolean, includeStyles: Boolean, includeDefaults: Boolean)`.
It gets properties of element with `name` identification.
`inherit`— toggles parent node property lookup. Null means inference from descriptor. Default is false.
`includeStyles`— toggles inclusion of. Null means inference from descriptor. Default is true.
`includeDefaults`— default is false.
* function `setProperty(name: Name, item: MetaItem?, notify: Boolean = true)`
Sets the `item` property to the element with the `name` identification. `notify` is a value which toggles the necessity of the change notification. Default is true.
