You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: realize_to.rs
    path of file: ./repos/dfdx/dfdx-core/src/tensor_ops
    
    the code of the file until where you have to start completion: use crate::{shapes::*, tensor::*};

/// Realizes the concrete shape of the tensor as another compatable shape,
/// or returns the original tensor if the new shape's dimensions are incompatable.
/// ```rust
/// # use dfdx_core::prelude::*;
/// # let dev: Cpu = Default::default();
/// let a: Tensor<Rank2<2, 3>, f32, _> = dev.zero
    
    fn test_realize_2d_backwards() {
        let dev: TestDevice = Default::default();
        let t: Tensor<Rank2<3, 5>, TestDtype, _> = dev.sample_normal();
        let g1 = t.leaky_trace().exp().sum().backward();
        let g2 = t
            .leaky_trace()
            .try_realize::<(usize, usize)>()
            .unwrap()
            .exp()
            .sum()
            .backward();
        assert_eq!(g1.get(&t).as_vec(), g2.get(&t).as_vec());
    }