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diff --git a/src/command_buffer/pool/mod.rs b/src/command_buffer/pool/mod.rs
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index e7a6fb6..0000000
--- a/src/command_buffer/pool/mod.rs
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@@ -1,103 +0,0 @@
-// Copyright (c) 2016 The vulkano developers
-// Licensed under the Apache License, Version 2.0
-// <LICENSE-APACHE or
-// https://www.apache.org/licenses/LICENSE-2.0> or the MIT
-// license <LICENSE-MIT or https://opensource.org/licenses/MIT>,
-// at your option. All files in the project carrying such
-// notice may not be copied, modified, or distributed except
-// according to those terms.
-
-//! In the Vulkan API, command buffers must be allocated from *command pools*.
-//!
-//! A command pool holds and manages the memory of one or more command buffers. If you destroy a
-//! command pool, all of its command buffers are automatically destroyed.
-//!
-//! In vulkano, creating a command buffer requires passing an implementation of the `CommandPool`
-//! trait. By default vulkano will use the `StandardCommandPool` struct, but you can implement
-//! this trait yourself by wrapping around the `UnsafeCommandPool` type.
-
-use crate::device::physical::QueueFamily;
-
-use crate::device::DeviceOwned;
-use crate::OomError;
-
-pub use self::standard::StandardCommandPool;
-pub use self::sys::CommandPoolTrimError;
-pub use self::sys::UnsafeCommandPool;
-pub use self::sys::UnsafeCommandPoolAlloc;
-pub use self::sys::UnsafeCommandPoolAllocIter;
-
-pub mod standard;
-mod sys;
-
-/// Types that manage the memory of command buffers.
-///
-/// # Safety
-///
-/// A Vulkan command pool must be externally synchronized as if it owned the command buffers that
-/// were allocated from it. This includes allocating from the pool, freeing from the pool,
-/// resetting the pool or individual command buffers, and most importantly recording commands to
-/// command buffers.
-///
-/// The implementation of `CommandPool` is expected to manage this. For as long as a `Builder`
-/// is alive, the trait implementation is expected to lock the pool that allocated the `Builder`
-/// for the current thread.
-///
-/// > **Note**: This may be modified in the future to allow different implementation strategies.
-///
-/// The destructors of the `CommandPoolBuilderAlloc` and the `CommandPoolAlloc` are expected to
-/// free the command buffer, reset the command buffer, or add it to a pool so that it gets reused.
-/// If the implementation frees or resets the command buffer, it must not forget that this
-/// operation must lock the pool.
-///
-pub unsafe trait CommandPool: DeviceOwned {
-    /// See `alloc()`.
-    type Iter: Iterator<Item = Self::Builder>;
-    /// Represents a command buffer that has been allocated and that is currently being built.
-    type Builder: CommandPoolBuilderAlloc<Alloc = Self::Alloc>;
-    /// Represents a command buffer that has been allocated and that is pending execution or is
-    /// being executed.
-    type Alloc: CommandPoolAlloc;
-
-    /// Allocates command buffers from this pool.
-    ///
-    /// Returns an iterator that contains an bunch of allocated command buffers.
-    fn alloc(&self, secondary: bool, count: u32) -> Result<Self::Iter, OomError>;
-
-    /// Returns the queue family that this pool targets.
-    fn queue_family(&self) -> QueueFamily;
-}
-
-/// A command buffer allocated from a pool and that can be recorded.
-///
-/// # Safety
-///
-/// See `CommandPool` for information about safety.
-///
-pub unsafe trait CommandPoolBuilderAlloc: DeviceOwned {
-    /// Return type of `into_alloc`.
-    type Alloc: CommandPoolAlloc;
-
-    /// Returns the internal object that contains the command buffer.
-    fn inner(&self) -> &UnsafeCommandPoolAlloc;
-
-    /// Turns this builder into a command buffer that is pending execution.
-    fn into_alloc(self) -> Self::Alloc;
-
-    /// Returns the queue family that the pool targets.
-    fn queue_family(&self) -> QueueFamily;
-}
-
-/// A command buffer allocated from a pool that has finished being recorded.
-///
-/// # Safety
-///
-/// See `CommandPool` for information about safety.
-///
-pub unsafe trait CommandPoolAlloc: DeviceOwned {
-    /// Returns the internal object that contains the command buffer.
-    fn inner(&self) -> &UnsafeCommandPoolAlloc;
-
-    /// Returns the queue family that the pool targets.
-    fn queue_family(&self) -> QueueFamily;
-}