Gradle determines the correct `this` object and invokes the correct corresponding method.
The `this` of the method invocation `id("plugin")` object is of type link:{javadocPath}/org/gradle/plugin/use/PluginDependenciesSpec.html[`PluginDependenciesSpec`].

The build script is essentially composed of Gradle API calls built on top of the DSLs.
Gradle executes the script line by line, top to bottom.

Let's take a look at an example and break it down:

The plugin DSL provides a concise and convenient way to declare plugin dependencies.

[[sec:binary_plugins]]
The plugins block configures an instance of link:{javadocPath}/org/gradle/plugin/use/PluginDependenciesSpec.html[`PluginDependenciesSpec`]:

[source, build.gradle.kts]
----
plugins {
    application                                     // by name
    java                                            // by name

            implementationClass = 'license.LicensePlugin'
        }
    }
}

// Additional lines //
----
<1> Use the `plugins{}` block from the link:{groovyDslPath}/org.gradle.plugin.use.PluginDependenciesSpec.html[PluginDependenciesSpec API] in the Groovy DSL
<2> Apply the Java Gradle plugin development plugin to add support for developing Gradle plugins
<3> Apply the Groovy plugin to add support for Groovy

import org.gradle.kotlin.dsl.support.useToRun
import org.gradle.plugin.management.internal.PluginRequestInternal
import org.gradle.plugin.management.internal.PluginRequests
import org.gradle.plugin.use.PluginDependenciesSpec
import org.gradle.plugin.use.internal.PluginRequestApplicator
import org.gradle.plugin.use.internal.PluginRequestCollector
import org.gradle.util.internal.TextUtil.normaliseFileSeparators

            assertHasDescription(
                "Execution failed for task ':compileKotlin'."
            )
            assertHasErrorOutput(
                """my-project-plugin.gradle.kts:3:17 Using 'plugins(PluginDependenciesSpec.() -> Unit): Nothing' is an error. The plugins {} block must not be used here. If you need to apply a plugin imperatively, please use apply<PluginType>() or apply(plugin = "id") instead."""
            )
        }
    }

                  Line 1: publishing { }
                          ^ Unresolved reference. None of the following candidates is applicable because of receiver type mismatch:${' '}
                              public val PluginDependenciesSpec.publishing: PluginDependencySpec defined in org.gradle.kotlin.dsl

                2 errors
                """
            )
        )
    }

    @Test

            </tr>
            <tr>
                <td>org.gradle.api.plugins.ExtraPropertiesExtension</td>
            </tr>
            <tr>
                <td>org.gradle.plugin.use.PluginDependenciesSpec</td>
            </tr>
            <tr>
                <td>org.gradle.plugin.use.PluginDependencySpec</td>
            </tr>
            <tr>

 *
 * <p>
 * Plugins can be used to modularise and reuse project configuration.
 * Plugins can be applied using the {@link PluginAware#apply(java.util.Map)} method, or by using the {@link org.gradle.plugin.use.PluginDependenciesSpec} plugins script block.
 * </p>
 *
 * <a id="properties"></a> <h3>Dynamic Project Properties</h3>
 *