protected void setLogoutActionBuilderIfUndefined(final LogoutActionBuilder logoutActionBuilder) {
        if (isLogoutActionBuilderUndefined()) {
            this.logoutActionBuilder = logoutActionBuilder;
        }
    }
<p>setLogoutActionBuilderIfUndefined.</p>

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