Namespaces in Imports field not imported from:
  ‘SingleCellExperiment’ ‘mclust’
  All declared Imports should be used.
Namespaces in Imports field not imported from:
  ‘SingleCellExperiment’ ‘mclust’
  All declared Imports should be used.
Namespaces in Imports field not imported from:
  'SingleCellExperiment' 'mclust'
  All declared Imports should be used.
PlotMST: no visible binding for global variable ‘X1’
PlotMST: no visible binding for global variable ‘X2’
PlotMST: no visible binding for global variable ‘label’
PlotMST: no visible binding for global variable ‘from.x’
PlotMST: no visible binding for global variable ‘to.x’
PlotMST: no visible binding for global variable ‘from.y’
PlotMST: no visible binding for global variable ‘to.y’
PlotMST: no visible binding for global variable ‘V1’
PlotMST: no visible binding for global variable ‘V2’
PlotPseudoTime: no visible binding for global variable ‘x’
PlotPseudoTime: no visible binding for global variable ‘y’
PlotPseudoTime: no visible binding for global variable ‘Timepoint’
PlotTrajectory: no visible binding for global variable ‘X1’
PlotTrajectory: no visible binding for global variable ‘X2’
PlotTrajectory: no visible binding for global variable ‘label’
PlotTrajectory: no visible binding for global variable ‘x’
PlotTrajectory: no visible binding for global variable ‘y’
Undefined global functions or variables:
  Timepoint V1 V2 X1 X2 from.x from.y label to.x to.y x y
'library' or 'require' call not declared from: ‘SingleCellExperiment’
Namespaces in Imports field not imported from:
  ‘SingleCellExperiment’ ‘mclust’
  All declared Imports should be used.
Namespaces in Imports field not imported from:
  ‘SingleCellExperiment’ ‘mclust’
  All declared Imports should be used.
Namespaces in Imports field not imported from:
  ‘SingleCellExperiment’ ‘mclust’
  All declared Imports should be used.

Running examples in ‘metabolighteR-Ex.R’ failed
The error most likely occurred in:

> ### Name: get_studies
> ### Title: Get Studies
> ### Aliases: get_studies
> 
> ### ** Examples
> 
> get_studies()
Error: Please install xml2 package
Execution halted
Running ‘testthat.R’
Running the tests in ‘tests/testthat.R’ failed.
Complete output:
  > library(testthat)
  > library(metabolighteR)
  Loading required package: magrittr
  
  Attaching package: 'magrittr'
  
  The following objects are masked from 'package:testthat':
  
      equals, is_less_than, not
  
  > 
  > test_check("metabolighteR")
  ══ Failed tests ════════════════════════════════════════════════════════════════
  ── Error (test-methods.R:4:3): tokenless-get-methods ───────────────────────────
  Error: Please install xml2 package
  Backtrace:
      █
   1. ├─testthat::expect_true(is.list(get_webservice())) test-methods.R:4:2
   2. │ └─testthat::quasi_label(enquo(object), label, arg = "object")
   3. │   └─rlang::eval_bare(expr, quo_get_env(quo))
   4. ├─metabolighteR::get_webservice()
   5. │ └─httr::GET(getOption("BASE_URL")) %>% httr::content("parsed")
   6. └─httr::content(., "parsed")
   7.   └─httr:::parse_auto(raw, type, encoding, ...)
   8.     └─httr:::parser(...)
   9.       └─httr:::need_package("xml2")
  
  [ FAIL 1 | WARN 0 | SKIP 0 | PASS 0 ]
  Error: Test failures
  Execution halted