Can't sign ethereum transaction in kotlin

[tajition]

Describe the bug
A clear and concise description of what the bug is.
Cannot sign transaction on ethereum. I have imported hd wallet and created the wallets. I can get their addresses and fetch the balance using external API. But I cant sign a transaction.

I have two unresolved references:

1. toHexByteArray()
2. Ethereum.Transaction

here are my imports

import wallet.core.jni.PrivateKey
import wallet.core.jni.CoinType.ETHEREUM
import wallet.core.jni.proto.Ethereum
import wallet.core.jni.proto.Ethereum.SigningOutput
import com.trustwallet.core.app.utils.toHexByteArray        // Error here. unresolved reference app
import wallet.core.jni.proto.Ethereum.TransactionMode    // Error here. unresolved reference TransactionMode
import com.trustwallet.core.app.utils.Numeric                   // Error here. unresolved reference app 

I tried deleting all imports and relying on android studio to auto import but it doesn't find them.

To Reproduce

1. Import TrustWalletCore
2. Create wallets
3. Try to sign eth transaction

I am using this example to sign a transaction: https://github.com/trustwallet/wallet-core/blob/master/android/app/src/androidTest/java/com/trustwallet/core/app/blockchains/ethereum/TestEthereumTransactionSigner.kt

I have copied the testEthereumTransactionSigning verbatim but removed the assertions instead opting to just get the hex string like this
val hexString = Numeric.toHexString(output.encoded.toByteArray())

Expected behavior
Get transaction hex string

Screenshots
not sure these help but.

Additional context
Fairly new to kotlin and android development. A pointer in the right direction is much appreciated.

Edit:
I have this import in my build.gradle depedencies

dependencies {
    implementation "com.trustwallet:wallet-core:2.6.3"
    implementation "com.squareup.okhttp3:okhttp:4.9.0"
    implementation "com.google.code.gson:gson:2.8.8"
    implementation "com.fasterxml.jackson.module:jackson-module-kotlin:2.13.0"
    implementation "com.google.zxing:core:3.4.0"
    implementation "com.budiyev.android:code-scanner:2.1.0"
    
    implementation "androidx.core:core-ktx:1.6.0"
    implementation "androidx.appcompat:appcompat:1.3.1"
    implementation "com.google.android.material:material:1.4.0"
    implementation "androidx.constraintlayout:constraintlayout:2.1.1"
    implementation "androidx.navigation:navigation-fragment-ktx:2.3.5"
    implementation "androidx.navigation:navigation-ui-ktx:2.3.5"
    implementation "androidx.legacy:legacy-support-v4:1.0.0"
    testImplementation "junit:junit:4.+"
    androidTestImplementation "androidx.test.ext:junit:1.1.3"
    androidTestImplementation "androidx.test.espresso:espresso-core:3.4.0"
}

not sure if something I imported might be conflicting as well

[optout21]

There are many many Kotlin .kt test files, please consult those.
I think the missing imports are:
import com.trustwallet.core.app.utils.toHexByteArray
import wallet.core.jni.proto.Ethereum

[tajition]

I have the imports but they are unresolved

import com.trustwallet.core.app.utils.toHexByteArray
import com.trustwallet.core.app.utils.Numeric
import wallet.core.jni.proto.Ethereum.TransactionMode

the following imports are unresolved

Edit 1:
I pushed to code github and pulled it on my laptop. The weird things is
import wallet.core.jni.proto.Ethereum.TransactionMode
Still doesnt work but I can replace it with
import wallet.core.jni.proto.Ethereum.Transaction
and it will the unresolved error will go away for this import.
But back on my desktop the error persists either way

Edit 2:
Think the app folder is missing altogether somehow in my import.

Edit 3:
I fixed the
import wallet.core.jni.proto.Ethereum.TransactionMode
by replacing it with
import wallet.core.jni.proto.Ethereum.Transaction
and rerunning the gradle build.
Still can't get com.trustwallet.core.app to resolved though

[tajition]

Solved the issue by using this example from sample app

https://github.com/trustwallet/wallet-core/blob/2.6.30/samples/android/app/src/main/java/com/trust/walletcore/example/MainActivity.kt

Tried examples following the test files but those didn't work without utils class. Maybe they will work if I take the required methods from the sample app and add them directly.