Type mismatch: cannot convert from Object to Map<String,IndexType>

[AlJohri]

Apologies if this issue is opened in the wrong place, but I'm running into a strange error where out of two equivalent lines in Java, both of which compile just fine, one gives me an error in my VSCode IDE.

This line gives me an error:

private static final Map<String, IndexType> INDEX_TYPE_MAP = Arrays.stream(IndexType.values())
    .collect(collectingAndThen(toMap(Enum::toString, Function.identity()), ImmutableMap::copyOf));

While this entirely equivalent line does not:

private static final Map<String, IndexType> INDEX_TYPE_MAP = ImmutableMap.copyOf(
    Arrays.stream(IndexType.values())
          .collect(toMap(Enum::toString, Function.identity())));

This line is defined in an enum using the common pattern of converting an enum to a key value pair map.

The error is: Type mismatch: cannot convert from Object to Map<String,IndexType> Java(16777233) from VSCode.

Java imports here

import java.util.Arrays;
import com.google.common.collect.ImmutableMap;
import static java.util.stream.Collectors.collectingAndThen;
import static java.util.stream.Collectors.toMap;
import java.util.function.Function;

[snjeza]

@AlJohri could you check https://github.com/snjeza/vscode-test/raw/master/java-1.4.0.vsix

[snjeza]

This issue is an eclipse upstream issue. It has been fixed in the latest Eclipse build.