sPFLib/src/main/java/it/polimi/spf/lib/Component.java
protected void handleError(SPFError err) {
		if (err.codeEquals(SPFError.TOKEN_NOT_VALID_ERROR_CODE)) {
			AccessTokenManager.get(mContext).invalidateToken();
		}
		mCallback.onError(err);
	}
protected void handleError(SPFError err) {
		if (err.codeEquals(SPFError.TOKEN_NOT_VALID_ERROR_CODE)) {
			AccessTokenManager.get(mContext).invalidateToken();
		}
		mCallback.onError(err);
	}
Performs common error handling operations. Subclasses may override it to
provide specific behavior.

@param err