If you are using Groovy, it's likely that you unintentionally added the `private` modifier to a property declaration:

```groovy
@InputFile
RegularFileProperty inputFile // this is a public property

@InputFile
private RegularFileProperty inputFile // this is a field, remove the `private` modifier
```

[[ignored_annotations_on_method]]
== Invalid annotation on method

import org.gradle.api.file.ConfigurableFileCollection
import org.gradle.api.file.Directory
import org.gradle.api.tasks.GroovySourceDirectorySet
import org.gradle.api.tasks.InputDirectory
import org.gradle.api.tasks.InputFiles
import org.gradle.api.tasks.PathSensitive
import org.gradle.api.tasks.PathSensitivity
import org.gradle.api.tasks.SourceSet
import org.gradle.api.tasks.SourceSetContainer
import org.gradle.api.tasks.TaskProvider

                    outputFile.text = "produced"
                }
            }

            task consumer {
                def inputFile = file("output.txt")
                inputs.files(inputFile)
                doLast {
                    println "Hello " + inputFile.text
                }
            }
        """

        when:
        runAndFail("producer", "consumer")
        then:

     *     interface Parameters extends TransformParameters {
     *         {@literal @}Input
     *         Property<String> getStringParameter();
     *         {@literal @}InputFiles
     *         ConfigurableFileCollection getInputFiles();
     *     }
     *
     *     void transform(TransformOutputs outputs) {
     *         // ...
     *     }
     * }
     *

    }

    def "cacheability for a task with no sources is UNKNOWN"() {
        buildFile """
            @CacheableTask
            class NoSources extends UnspecifiedCacheabilityTask {
                @InputFiles
                @SkipWhenEmpty
                FileCollection empty = project.layout.files()
            }

            task noSources(type: NoSources)
        """
        when:

```go
    {
        // Unique name for this test case
        name: "virtualServiceGateways",
        // List of input YAML files to load as resources before running analysis
        inputFiles: []string{
            "testdata/virtualservice_gateways.yaml",
        },
        // A single specific analyzer to run
        analyzer: &virtualservice.GatewayAnalyzer{},

                sourceDir = fileTree('source')
                targetDir = file('build/target')
            }

            class CustomCopy extends DefaultTask {
                @InputFiles
                @SkipWhenEmpty
                @IgnoreEmptyDirectories
                FileTree sourceDir

                @OutputDirectory
                File targetDir

                @TaskAction

import org.gradle.api.specs.Spec;
import org.gradle.api.tasks.CacheableTask;
import org.gradle.api.tasks.Classpath;
import org.gradle.api.tasks.IgnoreEmptyDirectories;
import org.gradle.api.tasks.Input;
import org.gradle.api.tasks.InputFiles;
import org.gradle.api.tasks.Internal;
import org.gradle.api.tasks.Nested;
import org.gradle.api.tasks.PathSensitive;
import org.gradle.api.tasks.PathSensitivity;
import org.gradle.api.tasks.SkipWhenEmpty;

            }

            dependencies {
                noAttributes project(":producer")
            }

            abstract class ResolveTask extends DefaultTask {
                @InputFiles
                abstract ConfigurableFileCollection getMyInputs()

                @TaskAction
                void doTask() {
                    /**

import org.gradle.api.provider.ProviderFactory
import org.gradle.api.services.internal.BuildServiceProvider
import org.gradle.api.tasks.Input
import org.gradle.api.tasks.InputDirectory
import org.gradle.api.tasks.InputFile
import org.gradle.api.tasks.InputFiles
import org.gradle.api.tasks.Internal
import org.gradle.api.tasks.LocalState
import org.gradle.api.tasks.Nested
import org.gradle.api.tasks.Optional
import org.gradle.api.tasks.OutputDirectories