PayPalOneTouch/src/main/java/com/paypal/android/sdk/onetouch/core/Request.java
@SuppressWarnings("unchecked")
    public T cancelUrl(String scheme, String host) {
        mCancelUrl = scheme + "://" + redirectURLHostAndPath() + host;
        return (T) this;
    }
@SuppressWarnings("unchecked")
    public T cancelUrl(String scheme, String host) {
        mCancelUrl = scheme + "://" + redirectURLHostAndPath() + host;
        return (T) this;
    }
@ SuppressWarnings ( "unchecked" ) public T cancelUrl ( String scheme , String host ) { mCancelUrl = scheme + "://" + redirectURLHostAndPath ( ) + host ; return ( T ) this ; }
Defines the host to be used in the cancellation url for browser switch (the package name will
be used as the scheme)
Defines the host to be used in the cancellation url for browser switch ( the package name will be used as the scheme )