Boilerplate code for the AWSProvider

AWSProvider.kt

package com.amazonaws.mobile.samples.customauth

import android.content.Context
import com.amazonaws.auth.CognitoCachingCredentialsProvider
import com.amazonaws.mobile.config.AWSConfiguration

class AWSProvider {
    companion object {
        private var mConfiguration: AWSConfiguration? = null
        private var mCredentialsProvider: Cognito
        private var mInstance: AWSProvider? = null

        /**
         * Read-only property for storing the AWSConfiguration
         */
        var configuration: AWSConfiguration?
            get() = mConfiguration
            private set(value) { mConfiguration = value }

        /**
         * Read-only property for storing the current instance
         */
        var instance: AWSProvider?
            get() = mInstance
            private set(value) { mInstance = value }

        /**
         * Read-only property for storing the Amazon Cognito credentials provider
         */
        var credentialsProvider: CognitoCachingCredentialsProvider?
            get() = mCredentialsProvider
            private set(value) { mCredentialsProvider = value }

        /**
         * Initialize the AWSProvider
         *
         * @param context the application context
         */
        @Synchronized
        fun initialize(context: Context) {
            configuration = AWSConfiguration(context)
            credentialsProvider = CognitoCachingCredentialsProvider(context, configuration)
        }
    }
}