assertFalse(result.isPresent());
    }

    @Test
    public void test_ofNullable_optionalEntityBehavior() {
        // Test with present value
        String presentValue = "present";
        OptionalEntity<String> presentOptional = OptionalUtil.ofNullable(presentValue);

        assertTrue(presentOptional.isPresent());
        assertEquals("present", presentOptional.get());

			t.Setenv(k, v)
		}

		ok, err := IsPresent()
		if err != nil && !test.ShouldFail {
			t.Fatalf("Test %d: %v", i, err)
		}
		if err == nil && test.ShouldFail {
			t.Fatalf("Test %d: should have failed but succeeded", i)
		}

		if !test.ShouldFail && ok != test.IsPresent {
			t.Fatalf("Test %d: reported that KMS present=%v - want present=%v", i, ok, test.IsPresent)
		}
	}
}

var isPresentTests = []struct {

            return new ApiResult(this);
        }
    }

    /**
     * Represents an API response containing a list of backup files.
     */
    public static class ApiBackupFilesResponse extends ApiResponse {
        /**
         * The list of backup files, where each file is represented by a map of strings.
         */
        protected List<Map<String, String>> files;
        /**

package cmd

import (
	"errors"
	"fmt"
	"strconv"
	"strings"
)

const (
	byteRangePrefix = "bytes="
)

// HTTPRangeSpec represents a range specification as supported by S3 GET
// object request.
//
// Case 1: Not present -> represented by a nil RangeSpec
// Case 2: bytes=1-10 (absolute start and end offsets) -> RangeSpec{false, 1, 10}

            spec.setIgnoreExitValue(true);
        });
        return new Result(execResult.getExitValue(), stdout.toString(), stderr.toString());
    }

    /**
     * An immutable class that represents the results of a Docker search from {@link #getDockerAvailability()}}.
     */
    public static class DockerAvailability {
        /**
         * Indicates whether Docker is available and meets the required criteria.

        // Verify the field naming is set to CAMEL_TO_LOWER_SNAKE
        OptionalThing<JsonFieldNaming> fieldNamingOpt = option.getFieldNaming();
        assertTrue("Field naming should be present", fieldNamingOpt.isPresent());
        assertEquals(JsonFieldNaming.CAMEL_TO_LOWER_SNAKE, fieldNamingOpt.get());
    }

    @Test
    public void test_provideMappingOption_notNull() {
        // Test that mapping option is never null

         */
        boolean isResolved();

        /**
         * Indicates whether the requested artifact is not present in any of the specified repositories.
         *
         * @return {@code true} if the artifact is not present in any repository, {@code false} otherwise.
         */
        boolean isMissing();
    }

	// Otherwise, the metadata is corrupted.
	keyID, idPresent := metadata[MetaKeyID]
	b64KMSSealedKey, kmsKeyPresent := metadata[MetaDataEncryptionKey]
	if !idPresent && kmsKeyPresent {
		return keyID, kmsKey, sealedKey, ctx, Errorf("The object metadata is missing the internal KMS key-ID for SSE-S3")
	}
	if idPresent && !kmsKeyPresent {

        context.invokerRequest.stdIn().ifPresent(System::setIn);
        context.invokerRequest
                .stdOut()
                .ifPresent(out -> System.setOut(out instanceof PrintStream pw ? pw : new PrintStream(out, true)));
        context.invokerRequest
                .stdErr()
                .ifPresent(err -> System.setErr(err instanceof PrintStream pw ? pw : new PrintStream(err, true)));

            Optional.empty<T>()
        )
    }.reduce { acc, next ->
        acc.zip(next) { left, right ->
            when {
                left.isPresent -> {
                    require(!right.isPresent) {
                        "Expected at most one provider to be present"
                    }
                    left
                }
                else -> right
            }
        }