keys:           []string{"connection_string", "comment"},
			expectedFields: map[string]struct{}{},
		},
	}
	for _, test := range tests {
		t.Run("", func(t *testing.T) {
			gotFields := kvFields(test.input, test.keys)
			if len(gotFields) != len(test.expectedFields) {
				t.Errorf("Expected keys %d, found %d", len(test.expectedFields), len(gotFields))
			}
			found := true
			for _, field := range gotFields {

		tgt = subSystemValue[1]
	}

	return subSys, inputs, tgt, e
}

// kvFields - converts an input string of form "k1=v1 k2=v2" into
// fields of ["k1=v1", "k2=v2"], the tokenization of each `k=v`
// happens with the right number of input keys, if keys
// input is empty returned value is empty slice as well.
func kvFields(input string, keys []string) []string {
	valueIndexes := make([]int, 0, len(keys))