After.kt

import com.quickbirdstudios.bluesquare.plugin.mockkAndroid

// 1
/* Apply the project specific plugin */
plugins {
    id("com.quickbirdstudios.bluesquare")
}

// 2
/* Configure the project specific plugin */
bluesquare {
    packageName = "core"
    publish = true
}

// 3
/* Define the modules dependencies */
dependencies {
    api(project(":core:base"))
    api(project(":core:hookable"))
    api(project(":core:hijack"))
    api(project(":core:controller"))
    api(project(":core:variant"))

    implementation(project(":processor:preview"))
    implementation(project(":image_processing"))

    testImplementation(project(":test_utils"))
    androidTestImplementation(project(":test_utils"))
    androidTestImplementation(project(":core:test_util"))
    androidTestImplementation(project(":processor:test_util"))
    androidTestImplementation(project(":core:test_util"))
    androidTestImplementation(mockkAndroid)
}

When the project specific plugin is applied, the current module is converted from library module to simple module and so kotlin classes cannot be created with the IDE