@GetMapping("/hello")
	@Parameter(name = "someEnums", in = QUERY, description = "SomeEum decs",
			array = @ArraySchema(schema = @Schema(implementation = SomeEnum.class)))
	@Parameter(name = "textSet", in = QUERY, description = "First decs",
			array = @ArraySchema(schema = @Schema(implementation = String.class)))
	@Parameter(name = "someText", in = QUERY, description = "Second decs",
			schema = @Schema(type = "string"))
	public String hello(@Parameter(hidden = true) User user) {
		String forReturn = "Hello ";
		StringBuilder stringBuilder = new StringBuilder(forReturn);

		if (user.getSomeEnums() != null) {
			for (SomeEnum some : user.getSomeEnums()) {
				stringBuilder.append(some);
				stringBuilder.append(" ");
			}
		}

		if (user.getSomeText() != null) {
			for (String text : user.getTextSet()) {
				stringBuilder.append(text);
				stringBuilder.append(" ");
			}
		}

		if (user.getSomeText() != null) {
			stringBuilder.append(user.getSomeText());
		}

		return stringBuilder.toString();
	}
Hello string.

@param user the user
@return the string
springdoc-openapi-tests/springdoc-openapi-javadoc-tests/src/test/java/test/org/springdoc/api/v30/app156/HelloController.java