Class
Common
```kotlin
class SemanticsMatcher(val description: String, private val matcher: (SemanticsNode) -> Boolean)
```
Wrapper for semantics matcher lambdas that allows to build string explaining to the developer
what conditions were being tested.
## Functions
matches
```kotlin
fun matches(node: SemanticsNode): Boolean
```
Returns whether the given node is matched by this matcher.
matchesAny
```kotlin
fun matchesAny(nodes: Iterable): Boolean
```
Returns whether at least one of the given nodes is matched by this matcher.
and
```kotlin
infix fun and(other: SemanticsMatcher): SemanticsMatcher
```
or
```kotlin
infix fun or(other: SemanticsMatcher): SemanticsMatcher
```
not
```kotlin
operator fun not(): SemanticsMatcher
```
## Companion Object
#### Methods
expectValue
Common
```kotlin
fun expectValue(key: SemanticsPropertyKey, expectedValue: T): SemanticsMatcher
```
Builds a predicate that tests whether the value of the given `key` is equal to
`expectedValue`.
keyIsDefined
Common
```kotlin
fun keyIsDefined(key: SemanticsPropertyKey): SemanticsMatcher
```
Builds a predicate that tests whether the given `key` is defined in semantics.
keyNotDefined
Common
```kotlin
fun keyNotDefined(key: SemanticsPropertyKey): SemanticsMatcher
```
Builds a predicate that tests whether the given `key` is NOT defined in semantics.