ReactStylesDiffMap (ReactAndroid 0.20.1 API)

```
public class ReactStylesDiffMap
extends java.lang.Object
```
Wrapper for ReadableMap which should be used for styles property map. It extends some of the accessor methods of ReadableMap by adding a default value property such that caller is enforced to provide a default value for a style property. Instances of this class are used to update View or CSSNode style properties. Since properties are generated by React framework based on what has been updated each value in this map should either be interpreted as a new value set for a style property or as a "reset this property to default" command in case when value is null (this is a way React communicates change in which the style key that was previously present in a map has been removed). NOTE: Accessor method with default value will throw an exception when the key is not present in the map. Style applicator logic should verify whether the key exists in the map using hasKey(java.lang.String) before fetching the value. The motivation behind this is that in case when the updated style diff map doesn't contain a certain style key it means that the corresponding view property shouldn't be updated (whereas in all other cases it should be updated to the new value or the property should be reset).

Constructors
Constructor and Description
`ReactStylesDiffMap(ReadableMap props)`

Methods
Modifier and Type	Method and Description
`ReadableArray`	`getArray(java.lang.String key)`
`boolean`	`getBoolean(java.lang.String name, boolean restoreNullToDefaultValue)`
`double`	`getDouble(java.lang.String name, double restoreNullToDefaultValue)`
`float`	`getFloat(java.lang.String name, float restoreNullToDefaultValue)`
`int`	`getInt(java.lang.String name, int restoreNullToDefaultValue)`
`ReadableMap`	`getMap(java.lang.String key)`
`java.lang.String`	`getString(java.lang.String name)`
`boolean`	`hasKey(java.lang.String name)`
`boolean`	`isNull(java.lang.String name)`
`java.lang.String`	`toString()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

public ReactStylesDiffMap(ReadableMap props)

public boolean hasKey(java.lang.String name)

public boolean isNull(java.lang.String name)

public boolean getBoolean(java.lang.String name,
                 boolean restoreNullToDefaultValue)

public double getDouble(java.lang.String name,
               double restoreNullToDefaultValue)

public float getFloat(java.lang.String name,
             float restoreNullToDefaultValue)

public int getInt(java.lang.String name,
         int restoreNullToDefaultValue)

@Nullable
public java.lang.String getString(java.lang.String name)

@Nullable
public ReadableArray getArray(java.lang.String key)

@Nullable
public ReadableMap getMap(java.lang.String key)

Class ReactStylesDiffMap