@Operation(summary = "find-articles")
	@GetMapping
	@Parameter(name = HttpHeaders.IF_MODIFIED_SINCE,
			description = "DateTime",
			in = ParameterIn.HEADER,
			schema = @Schema(type = "string", format = "date-time"),
			example = "2020-01-01T00:00:00.000Z"
	)
	public ResponseEntity<String> findArticles(@RequestHeader(value = HttpHeaders.IF_MODIFIED_SINCE, required = false) Instant modifiedSince) {
		return null;
	}
Find articles response entity.

@param modifiedSince the modified since
@return the response entity
springdoc-openapi-tests/springdoc-openapi-javadoc-tests/src/test/java/test/org/springdoc/api/v31/app106/HelloController.java