Extracting method ignores existing impl block

[krojew]

Environment

• IntelliJ Rust plugin version: 0.2.107.2137-192
• Rust toolchain version: 1.40 nightly
• IDE name and version: CLion 2019.2.4
• Operating system: Windows 10

Problem description

When trying to extract a block of code from a method to a new method, a new impl block for given struct is created even when there's an existing one already.

Steps to reproduce

struct Foo;

trait Bar {
    fn foo();
}

impl Bar for Foo {
   fn foo() {
       // extract some code from here
   }
}

impl Foo {
}

mod tests {
}

// new impl Foo {} block gets created here