Merge pull request #495 from JuliaRobotics/hotfix/2Q20/deploaddfg

help with #494 cases

Author: dehann

src/Deprecated.jl

@@ -26,7 +26,8 @@ GraphsDFG{T}(args...; kwargs...) where T = GraphsDFG{T}()
 
 @deprecate getInternalId(args...) error("getInternalId is no longer in use")
 
-@deprecate loadDFG(source::String, iifModule::Module, dest::AbstractDFG) loadDFG!(dest, source)
+@deprecate loadDFG(source::AbstractString, iifModule::Module, dest::AbstractDFG) loadDFG!(dest, source)
+@deprecate loadDFG(dest::AbstractDFG, source::AbstractString) loadDFG!(dest, source)
 
 # leave a bit longer
 export buildSubgraphFromLabels!

src/FileDFG/services/FileDFG.jl

@@ -17,7 +17,7 @@ v1 = addVariable!(dfg, :a, ContinuousScalar, labels = [:POSE], solvable=0)
 saveDFG(dfg, "/tmp/saveDFG.tar.gz")
 ```
 """
-function saveDFG( dfg::AbstractDFG, folder::String )
+function saveDFG( dfg::AbstractDFG, folder::AbstractString )
 
     # TODO: Deprecate the folder functionality in v0.6.1
 
@@ -82,7 +82,7 @@ loadDFG("/tmp/savedgraph.tar.gz", IncrementalInference, dfg)
 ls(dfg)
 ```
 """
-function loadDFG!(dfgLoadInto::AbstractDFG, dst::String)
+function loadDFG!(dfgLoadInto::AbstractDFG, dst::AbstractString)
 
 
     #