# resolveVariable abstract method

ResolvableType? resolveVariable(

1. Object variable

)

Resolves the specified type variable to a concrete ResolvableType.

This method takes a type variable (such as T, K, V in generic declarations) and returns the concrete ResolvableType that the variable should resolve to in the current context.

Parameters:

- `variable`: The type variable to resolve

Returns:

- ResolvableType representing the resolved concrete type
- null if the variable cannot be resolved in this context

Example:

    @override
    ResolvableType? resolveVariable(Object variable) {
      if (variable == typeVariableT) {
        return ResolvableType.forClass(String);
      } else if (variable == typeVariableK) {
        return ResolvableType.forClass(int);
      }
      return null; // Cannot resolve this variable
    }

## Implementation

    ResolvableType? resolveVariable(Object variable);