CurrencyProviderSpi (JSR 354 (Money and Currency API) 1.1 API)

```
public interface CurrencyProviderSpi
```
SPI (core) to be registered using the Bootstrap, which allows to register/provide additional currencies into the system automatically on startup. The implementation is allowed to be implemented in y contextual way, so depending on the runtime context, different currencies may be available.

Author:

Anatole Tresch

Method Summary

Modifier and Type	Method	Description
`java.util.Set<CurrencyUnit>`	`getCurrencies(CurrencyQuery query)`	Return a `CurrencyUnit` instances matching the given `CurrencyContext`.
`default java.lang.String`	`getProviderName()`	The unique name of this currency provider instance.
`default boolean`	`isCurrencyAvailable(CurrencyQuery query)`	Checks if a `CurrencyUnit` instances matching the given `CurrencyContext` is available from this provider.

- Method Detail
  - getProviderName
```
default java.lang.String getProviderName()
```
    The unique name of this currency provider instance.
    
    Returns:
    
    the unique provider id, never null or empty.
  - isCurrencyAvailable
```
default boolean isCurrencyAvailable(CurrencyQuery query)
```
    Checks if a CurrencyUnit instances matching the given CurrencyContext is available from this provider.
    
    Parameters:
    
    query - the CurrencyQuery containing the parameters determining the query. not null.
    
    Returns:
    
    false, if no such unit is provided by this provider.
  - getCurrencies
```
java.util.Set<CurrencyUnit> getCurrencies(CurrencyQuery query)
```
    Return a CurrencyUnit instances matching the given CurrencyContext.
    
    Parameters:
    
    query - the CurrencyQuery containing the parameters determining the query. not null.
    
    Returns:
    
    the corresponding CurrencyUnits matching, never null.