Make `adjust` available when defining sequence (components)

src/post_hoc.jl

@@ -3,7 +3,7 @@ Define post-fitting adjustments of the sequences
 """
 module PostHoc
 
-import ..Variables: AbstractBlock, adjust_internal, adjustable
+import ..Variables: AbstractBlock, adjust_internal, adjustable, adjust
 import ..Components: GradientWaveform, RFPulseComponent, BaseComponent, NoGradient
 import ..Containers: ContainerBlock, Sequence, Wait
 

src/variables.jl

@@ -53,6 +53,9 @@ Can return one of:
 """
 adjustable(::AbstractBlock) = :false
 
+# further defined in post_hoc.jl
+function adjust end
+
 
 abstract type AnyVariable end