## Mapping Patterns

In AVAP,  mapping patterns  are used to match mapping elements, such as dictionaries. Here is the syntax and behavior of mapping patterns:

```javascript
mapping_pattern ::=  { [items_pattern] }
```

Mapping Patterns  are designed to match elements within mappings, such as dictionaries. They use specific rules to determine if a pattern matches the given mapping.

* Syntax: Mapping patterns are enclosed in curly braces `{ ... }` . The `items_pattern` specifies the pattern for the mapping items.
* Matching Rules: The rules for matching mapping patterns include checking for key-value pairs in the mapping and ensuring they align with the specified pattern.
* Usage: Mapping patterns are useful for destructuring dictionaries and other mapping types in a concise manner.

Mapping patterns enhance pattern matching capabilities by allowing for specific and flexible matching of dictionary elements.
