public boolean removeImportedKey(ECKey key) {
        checkNotNull(key);
        checkArgument(!(key instanceof DeterministicKey));
        return basic.removeKey(key);
    }
public boolean removeImportedKey ( ECKey key ) { checkNotNull ( key ) ; checkArgument ( ! ( key instanceof DeterministicKey ) ) ; return basic . removeKey ( key ) ; }
Removes a key that was imported into the basic key chain. You cannot remove deterministic keys.
@throws java.lang.IllegalArgumentException if the key is deterministic.