diff --git a/src/devices/numa/impl.jl b/src/devices/numa/impl.jl
index 43e556b..01ac8cd 100644
--- a/src/devices/numa/impl.jl
+++ b/src/devices/numa/impl.jl
@@ -67,18 +67,30 @@ end
 """
     gen_access_expr(device::NumaNode, symbol::Symbol)
 
-Generate code to access the variable designated by `symbol` using the [`LocalVariables`](@ref) [`CacheStrategy`](@ref) on a [`NumaNode`](@ref).
+Generate code to access the variable designated by `symbol` on a [`NumaNode`](@ref), using the [`CacheStrategy`](@ref) set in the device.
 """
 function gen_access_expr(device::NumaNode, symbol::Symbol)
-    if typeof(device.cacheStrategy) <: LocalVariables
-        s = Symbol("data_$symbol")
-        quoteNode = Meta.parse(":($s)")
-        return quoteNode
-    elseif typeof(device.cacheStrategy) <: Dictionary
-        accessStr = ":(cache_$(to_var_name(device.id))[:$symbol])"
-        quoteNode = Meta.parse(accessStr)
-        return quoteNode
-    end
-
-    return error("Unimplemented cache strategy \"$(device.cacheStrategy)\" for device \"$(device)\"")
+    return _gen_access_expr(device, device.cacheStrategy, symbol)
+end
+
+"""
+    _gen_access_expr(device::NumaNode, ::LocalVariables, symbol::Symbol)
+
+Internal function for dispatch, used in [`gen_access_expr`](@ref).
+"""
+function _gen_access_expr(device::NumaNode, ::LocalVariables, symbol::Symbol)
+    s = Symbol("data_$symbol")
+    quoteNode = Meta.parse(":($s)")
+    return quoteNode
+end
+
+"""
+    _gen_access_expr(device::NumaNode, ::Dictionary, symbol::Symbol)
+
+Internal function for dispatch, used in [`gen_access_expr`](@ref).
+"""
+function _gen_access_expr(device::NumaNode, ::Dictionary, symbol::Symbol)
+    accessStr = ":(cache_$(to_var_name(device.id))[:$symbol])"
+    quoteNode = Meta.parse(accessStr)
+    return quoteNode
 end