diff --git a/magik-squid/src/main/java/nl/ramsolutions/sw/magik/analysis/typing/ClassInfoDefinitionReader.java b/magik-squid/src/main/java/nl/ramsolutions/sw/magik/analysis/typing/ClassInfoDefinitionReader.java
index 4b559115..0e249567 100644
--- a/magik-squid/src/main/java/nl/ramsolutions/sw/magik/analysis/typing/ClassInfoDefinitionReader.java
+++ b/magik-squid/src/main/java/nl/ramsolutions/sw/magik/analysis/typing/ClassInfoDefinitionReader.java
@@ -20,7 +20,6 @@
 import java.util.Set;
 import java.util.Spliterator;
 import java.util.Spliterators;
-import java.util.stream.Collectors;
 import java.util.stream.Stream;
 import java.util.stream.StreamSupport;
 import java.util.zip.ZipEntry;
@@ -223,7 +222,7 @@ private void readCondition(
     // Line 1
     final String name;
     final List<String> dataNames;
-    final String parent = null; // TODO
+    final String parent = null; // Parent is not registered in class_info files.
     try (Scanner scanner = new Scanner(line)) {
       scanner.next(); // "method"
 
@@ -233,12 +232,8 @@ private void readCondition(
 
       // Data names.
       final Spliterator<String> scannerSpliterator =
-          Spliterators.spliterator(
-              scanner, Long.MAX_VALUE, Spliterator.ORDERED | Spliterator.NONNULL);
-      dataNames =
-          StreamSupport.stream(scannerSpliterator, false)
-              .collect(
-                  Collectors.toUnmodifiableList()); // NOSONAR: Java heap space err with .toList().
+          Spliterators.spliterator(scanner, -1, Spliterator.IMMUTABLE | Spliterator.NONNULL);
+      dataNames = StreamSupport.stream(scannerSpliterator, false).toList();
     }
 
     // Line 2
@@ -377,16 +372,14 @@ private void readSlottedClass(
 
       // Slots.
       final Spliterator<String> slotsSpliterator =
-          Spliterators.spliterator(
-              scanner, Long.MAX_VALUE, Spliterator.ORDERED | Spliterator.NONNULL);
+          Spliterators.spliterator(scanner, -1, Spliterator.IMMUTABLE | Spliterator.NONNULL);
       slots =
           StreamSupport.stream(slotsSpliterator, false)
               .map(
                   slotName ->
                       new SlotDefinition(
                           null, moduleName, null, null, slotName, TypeString.UNDEFINED))
-              .collect(
-                  Collectors.toUnmodifiableList()); // NOSONAR: Java heap space err with .toList().
+              .toList();
     }
 
     // Line 2
diff --git a/magik-squid/src/test/java/nl/ramsolutions/sw/magik/analysis/typing/ClassInfoDefinitionReaderTest.java b/magik-squid/src/test/java/nl/ramsolutions/sw/magik/analysis/typing/ClassInfoDefinitionReaderTest.java
index 396a7b78..26e82955 100644
--- a/magik-squid/src/test/java/nl/ramsolutions/sw/magik/analysis/typing/ClassInfoDefinitionReaderTest.java
+++ b/magik-squid/src/test/java/nl/ramsolutions/sw/magik/analysis/typing/ClassInfoDefinitionReaderTest.java
@@ -12,6 +12,7 @@
 import nl.ramsolutions.sw.magik.analysis.definitions.GlobalDefinition;
 import nl.ramsolutions.sw.magik.analysis.definitions.IDefinitionKeeper;
 import nl.ramsolutions.sw.magik.analysis.definitions.MethodDefinition;
+import nl.ramsolutions.sw.magik.analysis.definitions.SlotDefinition;
 import nl.ramsolutions.sw.magik.analysis.typing.types.TypeString;
 import org.junit.jupiter.api.Test;
 
@@ -41,6 +42,8 @@ void testRead() throws IOException {
     final Collection<ConditionDefinition> condition2s =
         definitionKeeper.getConditionDefinitions("example_condition_2");
     assertThat(condition2s).isNotNull();
+    final ConditionDefinition condition2 = condition2s.iterator().next();
+    assertThat(condition2.getDataNames()).containsExactlyInAnyOrder("data1", "data2");
 
     // Mixins.
     final TypeString exampleMixinRef = TypeString.ofIdentifier("example_mixin", "sw");
@@ -53,6 +56,17 @@ void testRead() throws IOException {
     final Collection<ExemplarDefinition> exampleClassTypes =
         definitionKeeper.getExemplarDefinitions(exampleClassRef);
     assertThat(exampleClassTypes).isNotEmpty();
+    final ExemplarDefinition exampleClassType = exampleClassTypes.iterator().next();
+    assertThat(exampleClassType.getParents())
+        .containsExactlyInAnyOrder(TypeString.ofIdentifier("model", "sw"));
+    assertThat(exampleClassType.getSlots())
+        .containsExactlyInAnyOrder(
+            new SlotDefinition(
+                null, "class_definition_reader_test", null, null, "slot1", TypeString.UNDEFINED),
+            new SlotDefinition(
+                null, "class_definition_reader_test", null, null, "slot2", TypeString.UNDEFINED),
+            new SlotDefinition(
+                null, "class_definition_reader_test", null, null, "slot3", TypeString.UNDEFINED));
 
     // Methods.
     final Collection<MethodDefinition> doSomethingMethodDefs =