Rename StreamHelper to StreamHelper2 to fix name collision being caus…

Drop-In/src/main/java/com/braintreepayments/api/GraphQLQueryHelper2.kt

@@ -12,7 +12,7 @@ internal object GraphQLQueryHelper2 {
         var inputStream: InputStream? = null
         return try {
             inputStream = context.resources.openRawResource(queryResource)
-            StreamHelper.getString(inputStream)
+            StreamHelper2.getString(inputStream)
         } finally {
             inputStream?.close()
         }

Drop-In/src/main/java/com/braintreepayments/api/StreamHelper.kt → Drop-In/src/main/java/com/braintreepayments/api/StreamHelper2.kt

@@ -4,10 +4,9 @@ import java.io.BufferedReader
 import java.io.IOException
 import java.io.InputStream
 import java.io.InputStreamReader
-import java.lang.StringBuilder
 import java.nio.charset.Charset
 
-internal object StreamHelper {
+internal object StreamHelper2 {
     @Throws(IOException::class)
     fun getString(inputStream: InputStream?): String {
         val buffReader = BufferedReader(InputStreamReader(inputStream, Charset.forName("UTF-8")))

Drop-In/src/test/java/com/braintreepayments/api/StreamHelperUnitTest.kt

@@ -13,6 +13,6 @@ class StreamHelperUnitTest {
     @Test
     fun getString_readsAStringFromAStream() {
         val inputStream = ByteArrayInputStream("Test string".toByteArray(StandardCharsets.UTF_8));
-        assertEquals("Test string", StreamHelper.getString(inputStream))
+        assertEquals("Test string", StreamHelper2.getString(inputStream))
     }
 }