@JsonCreator
        public static ContentSecurityPolicyBean.Mode fromValue(String value) {
            ContentSecurityPolicyBean.Mode constant = constants.get(value);
            if (constant == null) {
                throw new IllegalArgumentException(value);
            } else {
                return constant;
            }
        }
Content Security Policy Definition
<p>
Valid CSP definition must be provided.

@param csp The csp
plugins/http-security-policy/src/main/java/io/apiman/plugins/httpsecuritypolicy/beans/ContentSecurityPolicyBean.java