Help with getDownloadUrl firebase

I have a project that records image and name of a product registration in firebase and I'm trying to load those images into a recyclerview, but stopped at getDownloadUrl. Since I am a beginner I have researched more without success.  If anyone can help me find a solution, I appreciate it.

if (mImageUri != null) {
        final StorageReference fileReference = mStorageRef.child( System.currentTimeMillis()
                + "." + getFileExtencion( mImageUri ) );

        mUploadTask = fileReference.putFile( mImageUri ).addOnSuccessListener( new OnSuccessListener<UploadTask.TaskSnapshot>() {
            @Override
            public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
                Handler handler = new Handler();
                handler.postDelayed( new Runnable() {
                    @Override
                    public void run() {
                        mProgressBar.setProgress( 0 );
                    }
                }, 500 );
                // Toast.makeText( Produtos.this,"Upload com sucesso",Toast.LENGTH_SHORT ).show();
                Upload upload = new Upload( mEdtName.getText().toString().trim(), 
                taskSnapshot.(AQUI TERIA QUE ENTRAR O CODIGO getDownloadUrl() MAS NÃO ACEITA).toString() );
                String uploadId = mDatabaseRef.push().getKey();
                mDatabaseRef.child( uploadId ).setValue( upload );
            }
        } )
                .addOnFailureListener( new OnFailureListener() {
                    @Override
                    public void onFailure(@NonNull Exception e) {
                        Toast.makeText( Produtos.this, e.getMessage(), Toast.LENGTH_SHORT ).show();
                    }
                } )
                .addOnProgressListener( new OnProgressListener<UploadTask.TaskSnapshot>() {
                    @Override
                    public void onProgress(UploadTask.TaskSnapshot taskSnapshot) {
                        double progress = (100.0 * taskSnapshot.getBytesTransferred() / taskSnapshot.getTotalByteCount());
                        mProgressBar.setProgress( (int) progress );
                    }
                } );
    }
}