WalletStore (fabric-gateway-java 2.2.0 API)

```
public interface WalletStore
```
Interface for store implementations that provide backing storage for identities in a Wallet.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`java.io.InputStream`	`get(java.lang.String label)`	Get data from the store.
`java.util.Set<java.lang.String>`	`list()`	List the labels for all stored data.
`void`	`put(java.lang.String label, java.io.InputStream data)`	Put data into the store.
`void`	`remove(java.lang.String label)`	Remove data from the store.

- Method Detail
  - remove
```
void remove(java.lang.String label)
     throws java.io.IOException
```
    Remove data from the store. If the data does not exist, this does nothing.
    
    Parameters:
    
    label - Name used to key the data.
    
    Throws:
    
    java.io.IOException - if an error occurs accessing underlying persistent storage.
  - get
```
java.io.InputStream get(java.lang.String label)
                 throws java.io.IOException
```
    Get data from the store.
    
    Parameters:
    
    label - Name used to key the data.
    
    Returns:
    
    The data, if it exists; otherwise null.
    
    Throws:
    
    java.io.IOException - if an error occurs accessing underlying persistent storage.
  - list
```
java.util.Set<java.lang.String> list()
                              throws java.io.IOException
```
    List the labels for all stored data.
    
    Returns:
    
    Labels.
    
    Throws:
    
    java.io.IOException - if an error occurs accessing underlying persistent storage.
  - put
```
void put(java.lang.String label,
         java.io.InputStream data)
  throws java.io.IOException
```
    Put data into the store. If data already exists for this label, it is overwritten.
    
    Parameters:
    
    label - Name used to key the data.
    
    data - Data to be stored.
    
    Throws:
    
    java.io.IOException - if an error occurs accessing underlying persistent storage.