D8: Cannot fit requested classes in a single dex file (# methods: 75768 > 65536) code example

Example 1: Cannot fit requested classes in a single dex file (# methods: 65710 > 65536)

android {
    defaultConfig {
        ...
        minSdkVersion 21 <----- *here
        targetSdkVersion 26
        multiDexEnabled true <------ *here
    }
    ...
}

Example 2: D8: Cannot fit requested classes in a single dex file (# methods: 85258 > 65536)

// For AndroidX
dependencies {
    ...

    implementation 'com.android.support:multidex:1.0.3'
}