spring-data-jest/src/main/java/com/github/vanroy/springdata/jest/MappingBuilder.java
private static void addSingleFieldMapping(XContentBuilder builder, java.lang.reflect.Field field, Field annotation, boolean nestedOrObjectField) throws IOException {
		builder.startObject(field.getName());
		addFieldMappingParameters(builder, annotation, nestedOrObjectField);
		builder.endObject();
	}
private static void addSingleFieldMapping(XContentBuilder builder, java.lang.reflect.Field field, Field annotation, boolean nestedOrObjectField) throws IOException {
		builder.startObject(field.getName());
		addFieldMappingParameters(builder, annotation, nestedOrObjectField);
		builder.endObject();
	}
Add mapping for @Field annotation

@throws IOException