protected void setRedirectionActionBuilderIfUndefined(final RedirectionActionBuilder redirectActionBuilder) {
        if (this.redirectionActionBuilder == null) {
            this.redirectionActionBuilder = redirectActionBuilder;
        }
    }
<p>setRedirectionActionBuilderIfUndefined.</p>

@param redirectActionBuilder a {@link RedirectionActionBuilder} object
pac4j-core/src/main/java/org/pac4j/core/client/IndirectClient.java