mergeSchemaSettings(src, target) {
		if ((target && target.$secureSettings) || (src && src.$secureSettings)) {
			const srcSS = src && src.$secureSettings ? src.$secureSettings : [];
			const targetSS = target && target.$secureSettings ? target.$secureSettings : [];
			if (!target) target = {};

			target.$secureSettings = uniq([...srcSS, ...targetSS]);
		}

		return _.defaultsDeep(src, target);
	}
Merge `settings` property in schema

@param {Object} src Source schema property
@param {Object} target Target schema property

@returns {Object} Merged schema